I'm sitting here on hold with AT&T staring at my new iPhone 4 wishing I could use it! Unfortunately in the mayhem and glitches of pre-order day I got assigned a new number rather than having my current iPhone upgraded. It's now the 5th hour of talking to AT&T. I think I've been on hold for 4 of those hours. This music is driving me crazy, WHY GOD DID SUCH A BEAUTIFUL PIECE OF HARDWARE HAVE TO BE PARTNERED WITH SUCH TERRIBLE SERVICE!?!?
One of my threats while dealing with the 6 different departments and managers I've been transfered to was that I would write a terrible review of AT&T on our website (unfortunately I didn't take names). But here is it. What are your AT&T horror stories? Post below
UPDATE: So I just got off the phone with the department that was supposed to solve my problems. They were the least helpful of all the departments so far. They said that I have no option but to return the phone and buy another one. AT&T wrecks the day again. I'm surprised that I'm surprised...
UPDATE 2: After 2 more hours on the phone with customer service (7 hours total) I have determined that I can go into the AT&T store and they will take care of it for me (you were right Jo Thorpe). I'm counting it as a win at this point. Special thanks to Mary Levine who was the one bright spot in an otherwise horrendous day (of customer service and otherwise)

My new IPhone and I can't use it
How about walking into your local AT&T CORPORATE local store? They have done wonderful things for me, especially after I picked up my 3GS from the local Apple store, due to availability issues with that phone at that time. They fixed the voice mail, and truly did handle all the details. I'm a long time ATTWS customer, and a high end user (too much $$ per month) although that didn't get me any special treatment when I bought my 3G and 3GS phones. My local store has consistently been wonderful to me. The manager there may be able to handle things for you if one of their reps cannot. Make sure it's a corporate store, not an "authorized dealer".
Take advantage of their 14 day return policy
If you can't get it settled today, my recommendation is to go ahead and use it with the new number, setup call forwarding on your old iPhone and turn that one off.
Use the new iPhone 4 and in the next few days, when the dust settles, go to a corporate store and return the phone, canceling your contract, and explain the situation.
Got the iPhone 4 etc....
I won't bore you with a bunch of information with which you have no interest (ie: TMI), however the ATTWS store has been great to me repeatedly, for many years now. A few months ago, they were a great help when ATTWS, in a response to Verizon, lowered their unlimited plan from $99 to $69. I also moved my old 3G from one of my accounts to my son's number at the same time. There's something about the face-to-face rather than the phone service. I worked for ATTWS, in a Sacramento call center back when Digital One Rate was introduced. That was a crazy time with at least 100 calls in queue at all times. I'm glad to hear you got this problem solved.