WebAfrica Poor Service

I got webafrica as an internet service provider and cancelled them due to poor service they gave me. The cancellation for the fibre line was 1 October, now i can't get another service provider for a line cause Webafrica has not released my line. I was told i need to now submit utility bill as POA and i did but since Monday line has not been released. I am self employed and i need stable internet to run my business, what Webafrica is doing to me is not right they need to release the line as i have terminated their services and did that the correct way.