Unfair treatment

I have been having issues with my bank and my double debit from Netstar rejected and then I make a manual payment for the same amount for the rejected debit and they dont check their credit control and they still handover over my account and I am being asked to pay an additional R192. For which month is this for? I have not received an email or a statement I can never access their app. Why are you lying about my account please check your records. PROPERLY I am sure my payments are up to date