Non-existent customer service, feels like *******.

I purchased gift vouchers online in December. The site informed me that the transactions had failed, and to try later. However my credit card was debitted. I immediately called the customer care line and was told to log an enquiry online. This I did on 10 Dec 2018. I have tried several times to follow up without any results. Today the CC agent informed me that an agent had tried to call me yesterday to let me know she has sent an internal email about this LAST WEEK, but can do nothing further. Truly pathetic that in almost 3 months this has not yet been dealt with. And yet they were quick to debit my money despite the "broken" site. Furthermore their attitude is that it's just too bad, that's how the system works.