Declined For A System That was never updated as account is closed

Today I received a call from Cell C for a contract. I was declined for an old contract more than 5 years which is still on the books and which has been paid up. I want your records and my details to be corrected as soon as possible and want a good deal as this is your mistake for nit updating for system. My name is Joseph Noah and I can be contacted on *** and my ID number is ***