Capitec locked my account without contacting me or enquiring my side of the story

I had an agreement with someone that he'll buy my laptop for R1000 and that he will fetch it as cash on pick-up. Upon the agreement he changed and insisted on me delivering the laptop to him which I agreed and he sent me the address and I told him he needs to pay 50% of the amount for assurance so he paid R550.

Upon receiving the R550 I went to Google maps to check the address and the picture of the house looked ***** as if no one lived there so I further searched if it was safe to go there only to get feedback that it's Hotspot for hijacking and courier vehicle ******ies .

Upon getting this information I called Seth Pretorius and told him let's meet at your nearest police station or you can come to my place of residence and he started swearing at me forcing me to come to his place which I declined and he hung up only to get another call from a number I don't know swearing at me saying it's his sister so I blocked the sister and called Seth Pretorius on his phone telling him it's either we meet at his nearest police station or he comes to my residence but he declined and swore more then lastly said if I don't come to his residence he'll show me that I'll pay 3 times of what he paid . Ever since he never called again till I tried use my card and found out it was locked regarding his claim. My account is still locked and it's been 8 days now .