Bad debit order service from telkom

Telkom has been charging me debit order failures fees for the past 3 months because the randomly debating my bank accounts I went to the store 3 to 4 times. Even today I went there and according to Montana telkom the system had my capitec, standard and nedbank account like when I change banking details bona they store them to randomly cherry pick on the accounts worse part is if it fails they add reconnection fees and you pay their debt collection you wait 10 days without reconnection....all I want now is to terminate my contract and advise or start a campaign to stop customers from going to that provider