Before calling anyone trying to "find" those miles, you need to look at your statement. It shows what number the miles are going to. I had this issue and 5 calls to AS and the bank got me nowhere.

Then my statement posted online and the AS number is there.

As to earning the miles and getting them. The spend has to hit BEFORE the billing runs each month. That trips people up often, including me. We had a small return one month that had one card just below the spend number. So, we had to wait another month.