I was a Centurylink customer for 18 months. While I was able to get internet for a pretty good price for a while, the internet connection itself was just terrible. I called no less than 10 times and requested to have assistance in making our signal better. Basically they told me that if I sat more than 10 FEET away from my router, I should expect to lose my internet periodically....REALLY...10 FEET?!?!? I actually dealt with this because no one would come out and I was still getting internet for less than $30/month.
Finally they raised my price and refused to give me a decent promotion, which actually makes me pretty happy because I could never decide to pull the trigger and break up with them with such a cheap price...it's like the Great Value brand of the internet.
After all this time I can't decide which was more frustrating - the horrendous internet service provided, or some of the most terrible customer service I've ever received.
Don't get me wrong - sometimes the agent is polite and sounds confident...but do NOT expect promises made verbally to be delivered in practice...I think that's almost worse than just being rude.