I'm suing the bastards
I have been averaging 6GB/month for a while since SiriusXM started streaming at 128KBps. It has never been a problem until last month, where my phone started becoming unusable at the 3GB download mark.
I called customer support, and they did a supposed "reset" (no mention of caps) which worked for 24 hours. I called again, took the rep a good 20 minutes to verify that yes, I was being throttled.
I tried to explain that when you consistently get a speed of "0.00" reported by speedtest, it's not throttling, it's NO DATA. After an hour of getting transferred and going nowhere, I figured out that my only course of action is a complaint to the PUC, the FCC, and then sue them in small claims court. Well worth the $35.
At this point, I'm done with them and I'm switching to SimpleMobile. The only sucky part is that I'll have to get an Android phone to get 3G, but I'm going to end up paying $50/month instead of $100 for better service.
**** you AT&T, you will NEVER, EVER, EVER have me as a customer again for as long as I live.