TMobile Home Internet -- Great signal but no internet?

I am having the same experience. I've had the gateway unit for about 3 months now. When I first got it I was pleased with the speed, but what I am finding is the reliability is terrible! Frequently in the mornings and evenings I will show 4 bars and good connection but No internet or internet speeds in the single digits. Calling T-mobile just gives me their usual run-around "unplug it….etc). Usually the internet will come back up in about 1 or 2 hours without doing anything, but these outages and slow downs are very annoying. I went into my local T-mobile store and THEY were able to pull up a list of towers they were servicing at the time, but this list was not available to me. The problem is obviously on their end and the obscuration of why this is happening really annoys me. Has anyone else had similar problems?