I had so many troubles yesterday with placing my order. Today, I see my bank account has been debited the wrong amount from the invoice. I called AT&T and they

I had so many troubles yesterday with placing my order. Today, I see my bank account has been debited the wrong amount from the invoice. I called AT&T and they say not to worry about it, they didn't communicate the order total properly..... When you take way more money than you invoice, I see a problem in that...They offered me a $29 credit after activation....