Had this exact experience. I was clearly being throttled, but they couldn't confirm my usage, my penalty, or even the fact that my service was still on. They have no answers, even after I escalated multiple levels. A full month came and went at throttled speeds, and I finally left after realizing they are selling service without any way to make sure the service exists / is turned on.
26 days ago in reply to Straight Talk denies hard cap on “unlimited data”, but fails to disclose when they throttle