Flawed processes

For the almost a year I have been struggling with the same issue over and over and there seems to be no solution in sight. My loan keeps going into technical arrears each and every month despite multiple pleas for assistance. I asked for the Debit Order to be cancelled because from the onset it was loaded incorrectly. I have been opting for EFT payments because this issue is not getting resolved. My account is up to date however I am still getting calls on a daily basis. This issue needs to be resolved. I am at my wits end