Don't ask for a refund, go to your bank or CC company and charge back the 6 months. That'll hit them where it hurts. Little known fact about chargebacks: the merchant pays an administration fee, typically $20 to $50. Per charge! That is why the smarter scammers refund to everybody who complains, not refunding is plain dumb. This scam has been around for a long time, usually it's adult companies that sell you a 'free'…
I have also won 3 chargebacks against companies who never delivered their product or used deceptive practices. The process was not too difficult, and I believe the CC companies tend to side with the consumer. Verdicts on the disputes can take several months to process though.