The Good Guys review: Store credit voucher that never had any credit

I purchased a new dishwasher which was advertised with a cash back credit from The Good Guys online. The purchase had no issues.

1 week later the credit arrived and when I tried to use it on-line, the store credit code registered as successful, but did not change the final purchase total.

Customer service cancelled the transaction and issued a refund.

I contacted the customer service email and exchanged 9 email and 2 phone calls, with no resolution.

They just kept requesting transaction details and copy of the credit and advised someone would resolve it. Its now been over 2 weeks and the credit has expired (although they did advise they would honor it, as there was evidence it wasn't working correctly.)

Not sure how many more emails and 1 hour calls to customer service is required to resolve this. A company offering redemption credits that don't actually work is false advertising!