Cell C is clueless with their business rules

I changed my banking details , i called 084140 and I spoke with a clearly small minded person who told me it changed and I must rate her service... I then called again to double check if it changes this time I spoke with a lazy Akhona who didn't bother to check, he told me banking details changed and my account was debited and they found money. Now I received an SMS stating I will be charged R70.00 cause my cell C acc is in areas. When I call Jeralden tells me banking details are not changed and my line will be locked . and their Manager Leam is as useless as his te don't know their work and he is also arrogant and helpless. I am at work if I was told they details are not changed.. I was going to pay on time by the bank. Now I have to leave work and sort out Cell C's incompetence. Cell C your small minded people will not make me pay penalty fees for their false information given to me.... Please get a professional team that knows customer service. Stop lying to customers.... You will go broke due to lack of good service