Horrible Service Provider

I signed in with Vox for our wifi at home in December, January my mom made an error when paying our account and skipped a digit in our ref number, Vox suspended our account i then called to find out why, then we were notified that we didn't pay our account, however we realized our mistake and sent the POP and they advised us to go and search the payment in the bank so they can allocate that payment, we paid double the Jan and Feb fees, then they opened our account however they gave us a cancelation fee of R1000, I caller to enquire about that and they said they sent a request to their debtor's department to cancel the cancelation fee ... however every month since January they suspend our account and the cancelation fee keeps growing then I call them and they rectify it on the system and open up our services... it's been three months now this happening, this month they suspended our account and the cancelation fee has increased to R3 800, its been two days that all their egents are trying to put me through to their debtor's department, today only I spoke to 4 agents and they all trying to put me to their debtor's department but with no luck as calls never gets answered I that department, I spoke to Marlen, Jennifer, Isabel and Refiloe and still no help ... wanted to speak to the debtor's department manager Linky and he/she also didn't answer.... this is the worst service provider i had to deal with in my entire life.