I'm on prepaid but I'm paying for data consumption I just don't utilize given the abysmal speeds. I have to use a mobile VPN just to achieve decent peering.
Basically to get around this absurd policy I have to switch to another carrier and back over two months. However, I don't plan to switch back once I make the jump.
In the last year I've traveled to a couple states and a few dozen cities and I had garbage speed and latency in all of them. T-Mobile's solution was that I buy a new phone. But the phone achieved 100mbit when I first got my plan.