Complaint Review: T-Mobile

I got the 39.99 1000/1000 T-mobile plan back in 2007 and kept the service, and the plan (until they "grandfathered" it) AND the same PHONE since then. I was on month-to-month (not the 2-year contract) for at least 4 years. I had always wanted to change to one of the unlimited no-contract offerings by other carriers, but kept putting it off. I finally decided on a no-contract T-mobile - still using the same phone from 2007. T-mobile made several free offers to lure me back, etc. But after experiencing the extremely poor no-contract version of T-mobile, at one point I told them, in a recorded phone call: "If I had any other phone to call from, T-mobile would never hear from me as long as I live." 

 Eight days later, I got a letter saying I owe them over $200! Now, each and every day I receive phantom phone calls from T-mobile: they just hang up when I say "hello".  This, after being on month-to-month for at least 4 years![Perfect payment record.] My conclusion is (1) The phone companies want to FORCE each of us to subscribe to their expensive $100 a month androidy plans, with the expensive phones, whether we need or want this level of service or not.  And (2) T-mobile apparently feels they are holding all the cards in extorting you, because if you don't "pay them off" they can and will mess up your pristine credit.