Worst U-Verse Customer Service

Finally ended my contract after the worst 12 months of my "web" life with Internet speeds of about 5mbps on the average despite the fact that I was paying for 18mbps. So I returned my equipment, called AT&T to make the final adjustment on my account only to find out that I couldn't make an online payment because they cancelled my account. A phone payment entails a $5 surcharge. Next option, the AT&T store because I just want to get this ordeal over with. I have been sitting here for the past 40 minutes because I need to be seen by an agent and I didn't have an appointment. Then a guy comes in wanting to buy a phone charger and he was in and out in 15 minutes. Really??? AT&T is such a nightmare until the very end. Never again!