Centrex Contract renewal issue

After receiving a letter to renew our Centrex contract, I called to renew the contract with no changes on March 5, two days before the expiration date. The amount quoted at the time was $160 per month, which would be only a slight increase in our monthly bill.

We received a letter in mid-April in the middle of being shut down, letting us know that the contract had expired. Our May bill arrived two days ago and has increased ten-times the normal monthly amount.

I called the number on the letter to find out that the order number given to me on March 5 was invalid and appeared to be a number dating back to 2013, and had no connection with our company or this issue.

While there is an order number buried within the bill, there was never any contact from AT&T on any changes to our contract, nor a quote indicating our bill would be rising exponentially. There was never any approval from our business, other than the renewal on March 5.

I spent the day either on hold or being transferred, only to have the transfer disconnect. Direct numbers I was given either ring back into the basic service line or are no longer active and hang up. One representative at the end of the day acknowledged that there was something wrong with the billing and immediately said he would email me, along with his supervisor, so that I could work with the supervisor on this. So far, I have heard nothing back, even after emails and messages left to the representative.