Capitec Blocking My Account Without Proper Investigation

Am so frustrated with capitec,I sell clothes that I stock from china some of the items takes three weeks to four weeks to arrive.One customer flagged my account claiming she cannot reach me while I have her on my Facebook page,Instagram page n while she can even call me.I refunded her but still can't access my own account when I go to the branch they say I should resolve this with her to access my own account.I tried speaking to her and ask a third person to speak to but she made it clear that she wants to spite me so she can see my business die. 1.Did capitec go and do proper investigations before blocking my account? 2.I have been doing this business for two years,none of my customers has ever complaint but now am blocked because of 1 person who says they can't reach me 3.It's unfair and my rights are abused to be blocked from my account that I get salary from,without any proper investigations and without any communication from me as the account holder. I would like to be assisted with this issue please. My account number *** My Cell number *** My email address ***