Poor service and unfair treatment

My name is Mmabatho, I have a loan with Capitec bank. On the 11 June 2020 I called the bank and advised them that I'm retrenched from work and also submitted all the retrenchment documents. On the 12 June Capitec sent me an SMS confirming that my claim was approved. Then in July I saw that an amount of R109 000 was paid by their insurance company. surprisingly I saw the balance of R3069 which I do not understand why was the account not closed. Today when I check my balance they have added R400 which is now R3468. Where will I get the money to pay since I'm unemployed. My loan was up-to-date with no arrears and the retrenchments documents clearly stated that I was retrenched in May. Why am I being charged interest and Why was the account not closed because I had insurance?