The person called and said that he wanted to speak to the office manager. He mentioned one of our employee's name. I let him know that this was a liason office and that the person that he was looking for was in our Dallas office. I was going to give him the telephone number and he hung up. He then called again and asked for said person; for some reason, I said yes, she is at our Dallas office and he hung up. I do not know if this person wanted to record the "yes" for some scam. At any rate, I called the number back and left a message letting him know that the number had been reported.
Not a scam. I came online to search myself before dealing with them but got everything in writing a much better services. They are just contracted by AT&T to sell to small & medium sized businesses. Better in my opinion than calling AT&T and waiting ages.