Vodacom bad service

I took a wifi contract including a free router, of 24 months at Vodacom. I signed to make payment via Debit order,of R99. This was on the 29 of June 2018.They were months whereby I had to pay cash(of which was extra about R200 plus) since Vodacom said there are extra charges if the debit was not made by them. Who fault was that since they was ALWAYS money in my acc, nobody's fault they said. From Feb 2020, they stopped on purpose I see to continue debiting their money. After that they put my name under Credit Bureau without a written notification /warning. Now I'm dealing with removing my name from ITC because of their wrong doings, which they have gained extra money by. Beware of Vodacom and their special contracts.