I am really frustrated with AT&T DSL.
First, whenever my DSL connection slows to a painful trickle, they try to diagnose hte problem remotely, then declare that they have to come into my house to complete the diagnosis. And each time, without even stepping through my door, they discover that the problem is something outside my home. Each time, the problem coincided with issues that other customers were having. Like they couldn't have figured that out beforehand?
Second, there are times when my network connection drops out for about 15 minutes or so. This gets to be truly aggravating. They can't figure out what's causing this problem though, probably because they don't have the right logging systems. They say that I need to call when the problem is actually occurring, BEFORE it gets resolved. Ugh.
And finally, late last night, when my network connection did drop out, I called them immediately and got no reply. They were out. DRAT!