DID NOT RECEIVE REFUND

My husband and I rented a car through Thrifty Car Rental at the OR Tambo airport. Everything went well, and we were told to expect the refund in a few business days. Long story short, we were advised that our refund was done on 17 January 2022 and should reflect in our account in a day or two. It is now 27 January 2022 and we still have not received our refund. When we call the call centre, no one is able to assist, and when we emailed the accounting department we still didn't get feedback. We are still waiting on our refund - and no one at Thrifty seem to care or seem to be able to provide us with answers or assistance.