Misrepresentation and abusive behaviour to customers

I purchased a Samsung T.V from Cash Converters Midrand on 11 May 2022. I sent the stock code of this samsung TV and paid via EFT into their bank account. When I went to collect the T.V I was given an invoice for a different panasonic T.V. Collin Morris, the manager there, was very abusive and irate. He refused to listen to reason and used racial derogatory terms. Instead of rectifying this matter and giving me what I paid for, he got his security to remove me from his store. I am a regular buyer at Cash Converters stores around the country and I am truly disappointed and disgusted at the way I have been treated.