Sorry to be so rude but the date you were given was randomly generated and had no meaning whatsoever. It was not a fix date but a review date which could be any date and does not require them to actually undergo any form of improvement during this period. Consequently, the review date will always be pushed back into oblivion and your internet connection will continue to deteriorate over time.
Getting consistently shafted by highly fluctuated ping during "peek" all daylight hours.
Welcome to the forum. I'm very sorry to hear that you have been experiencing slow speeds for some time now. I've been unable to locate your account to look into this further so I'll going to send you a PM (purple envelope, top right corner) for some additional information.