HORRIBLE (NON-EXISTENT) SERVICE FROM HOME CLOUD

I have been battling for months to get Home Cloud to stop billing me after their service is just non-existent. I have been sending many many emails to which I only got a few very dissapointing replies and for the past 4/5 months I am not even receiving any reply to discuss the problem. None of their numbers work. You never get through on any number provided on their correspondence. With every email I send I sometimes just get a reply with my invoice attached and being increased every month without even having the service. Where can I report this to get this matter resolved? Can anybody assist please? PLEASE DO NOT USE HOME CLOUD. THEY ARE TERRIBLE!!!