k** service provider + service rendered

I subscribed with TITC on November 25, 2018. They issued out an invoice for December and November with a value of over R1300, having discounted services provided for November. Mid-December they cut off the service and required that I pay them R1300 of which I paid in January. After that they invoiced for January, mind you service is still off since mid-December, this too was paid therefore I have updated my invoice and paid however today they suspend my services for non-payment. I have brought up my account for services that have not been rendered and now since they have suspended my account, want an additional R1300. In essence they want R3300 from me within the 2months i have been with them for a service they offer at ~R700 p/m that I have not received. k*k!!. I have raised this via email, because for the life of me, none of their website contact numbers are being responded and I keep getting automated annoying emails... This is a f*&*^d service provider and are not bothered to respond to inquiries nor raise a phone to call their client.