incorrect billing

Cell c is really testing my patience and I'm about to loose it I settled the account with them in February and ported my number they went ahead on the 23rd March and debit 978 from my account I called them nobody was able to give me an answer and I was dropped 8 times by their consultant I logged a complaint and skhumbuso ndlovhu contacted he even sent an email apologising for this they said I was incorrectly charged and it will never happen again today they debit me 978 again I can't keep reversing their debit order it reflects bad on my account I contacted my lawyer and I'm happy to say we gonna take this further