CCI Bad Customer services

CCI called on behalf of MTN , they charged me R2000 for a migration fee , its been 9 months now of back and forth and the issue which has been caused by their consultant has not been resolved and no one is taking responsibility . I am suffering the consequences of poor services , my line has been suspended, I cannot run my business neither can I receive calls and texts from school with regards to my daughter which also places me at risk of not being able to call should I need help or any emergencies. my credit record is at stake all they want is for me to pay money that CCI admitted it was a mistake on their side. no help still