Unresolved ********** transaction on my account

On the14/01/2020 I called Absa Bank to report ********** transactions on my bank statement ,I even went direct to the branch.to report this matter

I was advised that they handed me to their collection department and they advised that my account is in arrears.then I ask the person why handed me to collection department while I never skipped payments ,it was then when I advise them to cancel my debit order because of those ********** transactions the order for January was R9000 , I received email confirmation acknowledging that they received my copland from ***** department with the following Ref numbers ASZA-2***1 Follow up reference C-***6 As per the email it advised that investigation will take up to 30 days,till this far I have not received any correspondence instead I was handed over to the legal attorney. Initially when the account was open i had the the limit of R1600 but on the 8th January 2020 the statement 10/12/2019 - 8/012020 the amount owing on the account 25859.69 . As per to date statement amount owed is +- 56000. Kind regards