Non existent service

I have been having problems with my fibre, wifi with vumatel since 8 feb. I've called my service provider. They've now logged 3 fault tickets. I don't receive any reference number and the fault tickets have been closed without any feedback and my problems continue. I work from home so I cannot afford this. A fault was again logged this morning, but axxess my ISP cannot tell me when the problem will be sorted. This is so frustrating.