Renault South Africa Terrible Service, all clients are *******

I bought a part for renault Triber for my wifes car, it is the switch to activate the driver side electric window, as it turns out this is a common problem, the pasrt is sold out , even the second hand parts are sold out of this switch. I purchased the switch on the 22/12/2023 t about 4pm i paid cash, i tested the switch on the premises and it did not solve the problem, so i returned the switch to the salesperson. he told me that due to ***** by staff in the past, they had changed their procedures and they do not allow refunds without the proper paperwork being completed. He promised to email me the paperwork, which he faied to do. I called the dealership on the 27/12/2023, they asked me to complete a form. On the 28/12/2023 i returned and met the spare parts manager, who informed me that the sales person should have refunded the money immediately , however i was asked to complete the paperwork which i did. I was promised within 3-5 days i should have my money returned to my account. I must indicate i paid in cash, but now it is several days since the 22/12/2023, it is 14 days since purchasing and returning the same switch, and i still dont have a refund. This is not the first time we have issues with service at this service point. My wife purchased her car at this dealership and we had nothing but problems right up to the last service. They are bad in communicating with clients, or following up with clients due to complaints, and worst of all they assume clients are theives due to their own internal theft, now their returnes policies goes against the consumer protection act.