Stopped debit.

According to Damelin, my debit order for my course through their correspondence department has been stopped, of which as confirmed by FNB and to my knowledge, there has been no stop added to m y account for Damelin. I have given Damelin Correspondence feedback from the bank on the 31st October and have, to date, not received feedback. I am continuously receiving smses for outstanding payments to be made and that my account is in arrears, however, how the stop was placed needs to be investigated. This has now inconvenienced me, because according to damelin, i am in arrears with 5 months debits.