Capitec frozen account issues!

I was truly shocked by Capitec bank putting a freeze on my bank account for a absolute stupid reason. Someone residing in another province contacted me via Facebook marketplace because of a router I was selling. He asked if I could send it to him via Pudo to which I agreed. He deposited R300 into my capitec account as payment. I deleted my ad on marketplace which also then deletes any messages linked to that ad. I only had the person's name and nothing else. So i had no way of contacting him. I hoped that he would conrtact me as time went by but nothing. I even contacted Standard bank which is the bank from which he paid me and asked for any details that could help me get in touch with him. Long story short, after a long search i finaly got in touch with him and expained what happened and asked for his bank details so i could refund his money. Which i did. My disgust with Capitec is that i wasnt notified about any of this in any way. No sms, no email, no phone call nothing. I became aware of my account being frozen when i opened my app and saw there wasnt any cards or accounts linked. So i contacted capitec who confirmed ***** investigation against my account. Insane. Without any evidence or facts of the situation, they simply froze my account.so I got an affidavit at police station nd my proof of payment of the refund and went into my local branch where everything was logged. I received an sms from capitec stating that my request has been completed but still dont have my account active. Its been a week already and i need my account back as i cannot do anything or buy anything. This is not a joke at all. They are messing with peoples lives here without having any proof or letting us know whats happening. Absolutely rediculous!! I want to know when my account will be active again asap!!!