Failer to refund for an online purchase

Hi guys, I placed an order on the 16th of March 2020 for a t-shirt. As I was still waiting for delivery lockdown happened and I understood that as it was unplanned. Fast forward to level 3 where all the couriers resumed operation again, I expected my delivery from TFG and It didn't come. I then got an email saying my order was canceled at the beginning of level 3 but I never got my refund. I decided to call the customer service early June who assured me the Refund was being processed and when my July statement came I was hoping to see the refund but it wasn't there. I sent an email to customer service on the 15th of July and a person by the name of Ayanda Tendekwana only responded on the 25th of July, with just a reference number and promise that my query will be forwarded to the online department and still nothing has happened. The service is just pathetic