Capitec freeze my account without any consultation as a client

Capitec put my account on hold without telling me,I only found out today when i was trying to transfer money.i went to the bank they told me someone transfer 300 on the 12 of february using someone s account without consulting that person.Which i dont see why its concerned me,yes LULu transfer the money because she owe me as iam selling clothes,She was paying the balance .Can you please help me.