Dstv is a bunch of *******

Dstv is a bunch of *******, I am on a price lock plan and suddenly I am debited for more then the locked amount, I contacted the call centre and was assured that the app is showing the wrong amount due and that the normal price lock will be debited but still the debit went true for more how fd up is that I want to cancel my service as this has gone to far now im sick and tired of dstv.