I cannot get a refund for an item ord...

I cannot get a refund for an item ordered through Google even after following all directions given to me for returning & getting the refund. I have been trying since May 2009. I have all necessary information,i.e, Return Goods Authorization # 1204413-050709-12110, Fullfilment Center Address: 405 East 12450,Suite I, Draper, Utah,84020. Postal Delivery Confirmation # of returned item: USPS 0308 2040 0001 3963 7512, received in Draper, Utah at 1:13 pm, May 13/09. The cancellation # for the Google account : 050709-2667535. The phone # (866-957-0020) from which I received return instructions from "Sandy" is no longer valid. The refund due to me was $72.21. Who do I contact?
Thank you. Janet D. Layton
P.S. The $72.21 was drafted from my bank account though a debit card. This particular card has just been replaced last week. The bank account is the same. My phone # is (910) 276-3031.