Pathetic network

Good day

We have 3 contracts with cell c. Since around the 7th of September I have been experiencing problems with network on all THREE of the numbers. The devices either stay on roaming or on emergency calls only.. Or no network at all to the point where i cannot even get through to customer care. After 4 calls logged and explaining to the technical department yet no resolution. So every time I log a call they call me back about 6 days later and i confirm that the iusse seems to have been sorted only to have the network gone again the very next day. This has been on going for a month now. WHAT IS THE PURPOSE OF PAYING FOR DATA ETC THAT CANNOT BE USED. The lady at the call center who logged the most recent complaint on 10th October still has the audacity to tell me that i should put the devices on roaming, it might or might not have extra charges, PLEASE EXPLAIN TO ME WHY I should pay for a service they can't provide and still pay ridiculous amounts for roaming on not just one, but all 3 of my devices. And she still goes on further to say thats all that can be done if they have already tried to configure the devices they only solution is to put the devices on roaming. That is utter BS