worse customer service

This company doesn't have a great company complaints resolution service. For 1.6 years I have been explaining that Cell C must stop debited my dormant bank account. This ridiculous practice continues even when there's more than a year proof that I pay cash. Just recently I paid my account on 31/7/2020. on 11/8/2020 Cell C blocks my line issues a inaccurate statement that doesn't reflect payment of 31/7/2020, add penalty of R80.00 for returned debit. Like I said this returning debit penalty have been a subject of 1.6 years. And of course I always raise a dispute but, to Cell C its a game of 'let us see who gets tired first" and I am sick of been sick and tired of this level and ineptitude.