Sick and tired of terrible service

Absolutely terrible service. I just wanted to upgrade my EXISTING contract. Then Cell C said my ID number is faulty. It still had 000 at the end. This ID was NEVER used since 1989 and definitely not when I started my contract years after that!!!! After all my efforts and submitting a police affidavit THEN they said my account number is wrong. THEY DEDUCT MY EXISTING CONTRACT MONEY FROM THAT ACCOUNT FOR YEARS NOW!! It seems nobody can help me and they can’t give me a contact number to escalate. Their escalation does not help. A week later and still no resolution. I am sick and tired of Cell C. Woodlands tried to help but it seems head office doesn’t know how to resolve a problem.