Changing Plan Mid-month "pro-rated" unclear and deceptive practice. C.S. offers no help

Question

I recently found myself having to up my plan minutes for a family emergency. I went online and checked my usage I was at 394 minutes out of a 450 minute plan, so I elected to switch to the 900 plan minute for the month, ancipating I would go over in the next week. I was given options to back date it  or start on that day, as I had clearly not gone over my alloted minutes, I chose to start it as of that day.
My Bill came and I received 69 dollars in minute overages. How was this explained, that by prorating the bill, they divide the cylcel in half, not only by "dollars" which seemed to be the explantion I received online, but by minutes. SO my minute alotment of 450 was reduced to 240 for those two weeks I oriignally had 450 minutes in. They billed as if that was my allowance therefore saying I now went over my plan by 154 minute which I was billed to the tune of 69.00 dollars, plus the addition of the monthly increase in plan.
My question to any logical rational intelligent person would be, why would someone choose to up there minute plan, before they went over, just to then be charged for minutes they would not have been had they not upped there plan to the next level. This defies common sense and any explanation would as well.
Customer service sadly would not even hear or understand this, only to say this is a valid "cost" and I should have read the "disclosure" statement or called if I had questions and not use online services. I asked both the operator and a supervisor for the terms of the disclosure agrement and neither could tell me what it said. However in reading  billing question answers they respond "For example, if you changed rate plans during the middle of your billing cycle, your statement should contain a charge for the old rate plan (according to the number of days in your cycle that you were on the old rate plan) and the new rate plan. " yes that makes sense but no where does it say your minutes may be reduced up until this point and you may occur additional charges not already used. by ironically "increasing your minute plan".
I am waiting for a manager to return my call,  As a long time customer of verizon whom have promoted them and the new iphone all over facebook and such to my friends I am very discouraged by this practice, and the lack of resolve.

Answer 1

Mike I appreciate that at least you are familiar with what the disclosure statement says, despite othert reps not being able to recite it. However the term "may" be in inself is Misleading, if "airtime" is  prorated the statement should read "YOUR airtime MINUTES will be prorated and reduced to this point, possibly resulting in overages and additional charges" The wording is intentionally misleading. If it weren't MIke, why would anyone KNowingly select an option that would then cause them to  owe an additional 69.00 dollars they didnt owe at the time, when UPPING their PLAN?
The fact that Customer Service Can't see that as a very real possiblity and just is dissmisive saying You should have read the disclosure statement., and it is a valid charge tells, me they run into this frequently and they have a script to read from to cover themselves, leaving the HUman Element out of the equation. It is sad enough I had to Up my plan only temporarily while dealing with a tragic family situation, to add insult to injury. To me the term "may" be prorated and "may" result in additional overages meant, that if I had gone over my minutes prior to the change I would be charged, because MIKE that is COMMON SENSE. and a REASONABLE person May think that. Cutomer Service Reps could at least acknowledge that as a very real Understanding of how that line could be interupted, and that a reasonable person would not otherwise increase their plan only to be charge for something they would not have otherwise been charged.
I am almost positive in the Future this wording will be Changed after the continued Myriad of complaints. From what I already understand the new "changing minutes and not plan" option already has changed it. SO why not make things right for long time loyal customers now. I actually want to reduce my plan back down now as it was a temporary emergency however I DONT dare do it mid month again, SO I will wait another 2 weeks and pay even more.
This is NOT ME and my misunderstanding, just googling the topic comes up with tons and tons of complaints, articles written on the topic and so fourth. I have been waiting days for someone as promised to call me back as well and that hasnt happened. I have talked to so many friends about this many verizon customers and all say this can't be right, because it DOESNT MAKE SENSE, despite it being "valid" as you say.