Terrible service from capitec

I'm so upset with the treatment received by capitec after being a client of theirs for over 7 years.ive sold a car last Monday and the customer had a puncture with the car.they then called in to capitec to lie and say that funds were moved out of their account without their knowledge.capitec bank then does not even call me to find out but they decide to block my account with all my funds.ive went into a capitec branch and furnished all the agreement and copies of the car papers as well as an affidavit.theyve escalated to forensic dept and all that I've been told is that I need to give them 24 to 48hrs.its now almost 2 weeks and no positive feedback.now I get told that I must get in touch with the buyers and ask them to bring an affidavit.capitec has all the documents to prove that the funds were transferred to me by the buyers.i need assistance rather urgently in this matter as the buyer has a civil claim against me for a puncture and not by blocking my account as third party *****.there is absolutely nothing ********** in this transaction aside from them lying to capitec.