Complaint Review: Nationwide home warranty

Over Telephone I authorized to charge my credit card in the amount of $350 for Home warranty on 5-26-2009. The contract should start on 6-1-2009. Before that date, I called and requested to cancel the contract. The Customer service cancelled the contract and wanted to issue the credit. Took more than 2 months, then I disputed through my credit card. after failing, I again contacted with Natiowide and they confirmed credit was issued on 9-13-2009. Now, at 10-8-2009, they are telling they are still reviewing. Everytime  I called, they confirmed within 2weeks, within 1week, within 4days, within 4 hours, with 48hours credit will be issued. Never got credit. It's 5months. I already have home warranty under American Home shield. I have following dates and contacted persons

6-26-2009: Jason billing was issuing credit

8-24-2009: Billing department, Jason wanted to issue credit

9-2-2009: Franklin confirmed a credit on 9-9-2009

9-11-2009: Franklin issuing credit by next 4 hours

9-12-2009; Franklin issuing credit next wednesday

9-17-2009: Billing  confirmed credit was issued on 9-13-2009

10-2-2009: Billing wanted 3-5days

10-8-1009: Billing wants 48 hours for review

Overall, I haven't signed any contract. I cancelled on time. They took more than 5 months and I believe, this company is doing injustice to many.