Absa bank is going down if they continue treating their customers like animals

I am really fed up with Absa bank. my company suspended me for 3 months November 2018 until February 2019 I had only 3 debit order that bounced, my account went from R19.94+ to R1190.62- in march I received a call from Vericred collection telling me that I now owe ABSA R4330,74-

What makes me fed up is communication issue, why did they hand me over? how do they add their fees and interest on cheque account? for good sake I am still using my account