Absurd Service With After Sales

Question

Had a Thinkpad X230 where the DC power jack was loose. Laptop was bought from a third party over the net, but it was verified to be in working condition upon sale, warranty verified to be valid till 2017. Furthermore, it was used for a short time before the DC power jack came loose.
Sent it to IBM Singapore at Changi for repair but was refused parts replacement. I escalated the issue and it found its way to Lenovo ASEAN in Malaysia. I was contacted by a certain Ms S in Lenovo ASEAN who insisted on producing the invoice. I do not understand the very persistent insistence on producing invoice when the warranty was clearly and easily verified to be valid till 2017. Ms S explained that it was part of internal procedure for decision by management. I personally find that hard to believe. But I accorded Ms S the benefit of the doubt and continued on with the "procedure".
Ms S managed to find (within some internal database I suppose) to whom the laptop was sold (and presumably when) to and yet still wanted an invoice. Furthermore, I had to contact the third party to request for the invoice. I mean seriously, which company releases their invoice like that ? In a further twist of affairs, third party told us that it was then sold to fourth party and we had to request invoice from fourth party.
Ms S then asked third party to settle with fourth party to send her the invoice. Strangely, a day later, Ms S called me on the telephone asking me where I obtained my unit from and asked me to produce invoice to which I said no invoice. Ms S then promptly said that in that case it is no longer the case. I asked her if that was management decision to which she promptly replied yes again. I had to demand an explanation as to why she was previously ok with getting an invoice from fourth party, and then quickly called me again to say that management decided not to cover under warranty.  I was not given an explanation at the time of writing yet, and Ms S cited the limited warranty clauses again. I replied requesting respectfully an explanation because we would not be in this absurd episode if the limited warranty clause applies in the first place.
At the time of writing, I am still waiting for a reply. But this has been a circus show which lasted three weeks of my time on an uneventful wild goose chase (management? seemed to have given up on pursuing invoice after a few weeks after insisting so badly on it) which led to a simple refusal for warranty cover by management. A simple loose jack can be replaced within a few days by most normal computer repair shops. But if the refusal to cover under warranty which I personally find unreasonable, then I do not see any further point in maintaining warranty legibility (or paying for it) and might as well get it fixed by the kids in the computer shop. The entire experience is absurd beyond belief and I never experienced anything like that previously.
I do have some questions: 
(1) Is warranty transferable to another party after sale ? From what I understood the warranty is attached to the serial number fo the machine. If it is not transferable, then I am disappointed that the resale value is low.
(2) It is claimed that invoices are necessary for internal procedure. And that management makes the decision for cases like that. I find it difficult for management to be occupied by each individual faulty product in the market. Furthermore, since it could be verified internally on the details of the first transaction, why still insist so persistently on invoice ? Isn't that information enough on when it was bought and so on ?
(3) It was stated clearly in the warranty that it is void in the event of accidents, misuse etc... The reason I was initially given was simply because it was a physical defect, hence not covered. That was not stated in the warranty. I enquired Ms S respectfully on this point but no further remarks received. 
Three weeks of lost productivity in limbo, being sent on such a journey is amazingly absurd. I have lost faith in Lenovo products and service especially. The last telephone conversation almost ended in an implicitly accusatory tone of voice and explained as "refusal by management" to be a little insulting frankly. The only "fortunate side" if it is even appropriate to call that is that it is my personal machine. However, I cannot in good conscience recommend this in my workplace as this experience has been extremely negative to risk my company's work over. There might be some biases in my opinion of this episode but I hope that this serves as feedback to Lenovo and there were many glaring points not addressed directly with the background and implicit messages bordering the fringes of morality in my opinion. Very disappointing !

Answer 1

It ended quite badly with Ms S replying explicitly in mail that it is put under the clauses: 
- failure or damage resulting from misuse, accident, modification, unsuitable physical or operating environment, natural disasters,
- power surges, or improper maintenance by you;
So now after sale services is accusing clients. Bravo. Why is it so difficult to get the warranty honoured when the clauses are already so explicitly written ? Is there anywhere I can file a proper complaint / feedback ? I was told that there was no further recourse for my case by Ms S. Or do I have to ask around the forums ?