Who can you believe in BT?

Question

I am a very satisfied customer of O2 Broadband but achieve only 3.5M due to line length. BT are estimating my speed on Infinity will be 33.1M. I'm keen to achieve that speed and have got my MAC. But I'm concerned by the number of posts on this forum indicating the estimated speeds are often not achieved, sometimes by a large margin.
BT call me several times a week asking me to order. But first they tell me that if I don't achieve the estimated speed then I can cancel within 3 months with no penalty (but I can't find that in T&Cs). Then... another BT guy tells me the first guy has misled me and I cannot cancel on the basis of not achieving a given speed. The first guy then says his calls to me are recorded and if he promises a speed then I can always quote the phone call regardless of what it says in the T&Cs. I say I don't feel I can rely on that if problems occur later! He passes me to his manager who says the threshold for being able to cancel without penalty is 15M but cannot find it in the T&Cs.
I then ask him if I go for Option 1, with a 40Gb limit, and find I need more then can I upgrade to Option 2 part way through without extending the term of the initial contract. He replies it depends which department I contact within BT, his office will require a new 18 m contract but other departments can upgrade the service retaining the existing contract term.
Am I talking to the same company? 

Answer 1

I know you shouldn't purchase something based on rumours but there is one going around about a speed increase in the not to distant future.
Thread HERE and HERE
I went for Infinity option 1 and had a very helpful discussion with sales. 
I had unlimited UK landline calls included with my old BT broadband but didn't think I needed the full Infinity opt 2 package that also had unlimited calls.
So I was able to take Infinity option 1 and add an uplift of £4.75 to give me unlimited calls.
I then asked if transferring from BT adsl broadband to Infinity mean I have to start an 18 month contract again and was told that I would.
I then asked if after a while I found I needed to upgrade to to option 2 as the 40Gb download cap was too restrictive, I was told I could and that as option 2 has unlimited UK landline calls included all I had to do was give BT 30 days notice to cancel my existing calls uplift. 
There was no mention of having to start another 18 months contract. 
I had been discussing contract periods ref would I still have to keep paying until the end of my existing contract for £4.75 anytime calls uplift when/if I upgraded as it is included in option 2.
So having initially being told quite up front I would have to start a new 18 month contract for my BT Infinity option 1 and then being told about the 30 day cancellation notice for the calls uplift I would expect the BT sales representative to have made it clear that to move from Infinity option 1 to option 2 would mean a re-start to the contract again.
So if I do upgrade I would not expect to re start another 18 month contract. 
I suppose this may just be my situation and I do keep a note of the names, date and time the conversation took place so if needed it could be confirmed.
My dealings with BT have always been very fair and am sure something can be negotiated.
My Infinity speed improvement (over wireless) from 1.5Mb to 37Mb HERE
Does change nowadays between 30 to 37Mb.
But will you take the leap of faith into Infinity.....
Please Click On any Text in Blue as that automatically links to information.
PC (NDEGR)