Worse consumer service, a great disappointment!!!

Chateau Gateaux, a well known franchise with such poor customer service! The accounts department seems to be the most *********** staff I have ever encountered. I purchased a 24cm Caramel Velvet cake from the Gateway store on the 4th of August for a birthday party, I cut into the cake, not even 50% into the cake and the inside of the cake was uncooked, let alone having to face the disappoint of paying R400 for a cake from an upmarket franchise, the store didn't have a replacement 18cm red velvet cake. So I returned the uncooked cake on the 5th of August and was told I will receive a refund within 3 to 4 days. Last Friday I called to follow up on my refund and was told that the refund email from the Gateway store was missed by the finance Dept so I will have to wait another 3 to 4 days, today I phoned to follow up on my refund and was told that the payment wasn't processed, this was only attended to today after my enquiry so I will have to wait another 3 to 4 days. It's now taking 3 weeks to process a refund based on the fault of the supplier. This is unacceptable!!! The service has escalated from bad to worse!!!