So called 'Customer Care'

I have 4 contracts in my name with vodacom which have been running for a lot of years. Suddenly this month they decide to combine 2 of the contracts invoices, so now on the same email i receive only 3 invoices and 1 statement instead of 4 invoices and 1 statement. I ask them to correct this as one of the numbers on the combined invoice needs to be submitted to my company who will not accept a combined invoice, and I get a reply saying that they cannot because of their 'new system'. This is not a logical response because why are only 2 of the contracts combined then and not all 4, how do you generate separate invoices for the other 2 numbers!!!!!? I got upset and told them that if they don't correct it then I will have to port to another service provider who can invoice correctly and I have just received a response from Justin Joseph from 'Customer Care' saying "sorry you feel that way but our answer remains the same"!!!!!!! REALLY hey.... CUSTOMER CARE!!!!!!!! I am beyond words vodacom