Account eft?

I was just told in the shop my account is overdue after using absa's beneficiary for payments with Eft towards my account the last 2 months! I phoned your accounts department and they told me to call customer care. I go through your exhausting long number pressing business. Enter my ID number just to be asked for it again?????? Why confirm it when I already have to type it in you are waiting my time and I want answers on why my account shows overdue when I'm using absa's beneficiary account details for you. Then I want to know where have my money gone if not into my account with you? I only have a credit limit of R4000 how can My account go over that? When did I approve a increase? Please fix this and phone me back with answers not questions.