Fradulant Contracts and Unauthorised Debit orders by MTN

I have just discovered that I have 5 contracts opened with a space a month on different dates. Now I have to reverse a debit order at a cost as bank do charge us for reversal of these transaction.

Why MTN is not comply with debtcheck system as bank have this enabled in our accounts?

This is a problem they are creating and promoting ****** as we fall viticms of their faillures to keep up with best cyber measures to combat such thread of unauthorise debit and thus allowing **********s to commit ****** with our identities. In the end we must to proove to them that we have no contract with them. but crimianals runs scot-free and banks pocket changes.