MY ACCOUNT ON HOLD

i tried to use my capitec card it kept saying declined, i went into the branch the lady check and it says account put on hold, she then however contacted the ***** department, and the only answer i got was your employee has put a hold on your account because you stole money from them, i asked i need more information and they sai =d they cant help, i was not eve advised of this matter, neither am i working for that employee anymore, so why are you putting a hold on my account without valid reasons