I ported my number to AT&T on January 10, 2016, with the expectation that my final bill will be prorated for the 4 days of usage. My bill cycle is the 6th of each month. I keep close records of all my charges, so I was under the assumption that my account is current and I paid my bill for the period 12/7/15 - 1/6/16, since I was billed 1 month in advance. Once I ported my number on 1/10/16, I knew I had to pay the equipment balance and whatever final bill I may have. I tried logging into my account to check any balances, but no luck. Since I cancelled my account, I can no longer log in online. No big deal, I figure I would get a bill. Fast forward 1 month later, around February 3, I received a letter from Tmobile saying my account is past due and I owe $207. There was no description of what the charges were for. I knew it wasn't the equipment balance, because I owed more than that. I called Tmobile customer service, and they try to tell me it's for the service period 12/7/15 - 1/6/16. I tried to explain that I believe I paid that bill in late December, because I was billed 1 month in advance. They kept insisting I was wrong, that they don't bill that way, and it was for 12/7/15 - 1/6/16. I request to see my 1st bill to verify that I was billed a prorated charge of the month I started service + 1 month in advance. They said they couldn't go back that far, and I had to go into a retail store. Fine. Before I went to a store, I received a final bill a few days later with the same $207 past due charge with no description of what it was for + the equipment balance. I went to a retail store and they said they can't go back that far either. WTF? However, they were finally able to pull up the January bill that I never received (I had paperless billing, but I couldn't see the bill online since I couldn't log in after cancellation). It stated it was for 1/7/16 - 2/6/16. So after I inquired about that, the retail rep finally stated they don't prorate the final bill when you port out.
Long story short, I left the store wondering why I was led to believe I was being billed for a period I already paid for? Did they not want to tell me they didn't prorate the final bill unless I discover it through my own investigation? Why did I receive a past due letter when I never even received the final bill, or was able to view online? Am I expected to just pay a bill that says, "past due" amount without know what it was for? Also, after I found out about the final bill not being prorated, I did some searching and did find that the terms of agreement says so. But really, who reads that? I'm more upset that they try to tell me I'm being billed for something I already paid for to avoid telling me about not prorating the bill. Because I suspect most people will be livid to find that out.