Webafrica operators can't assist

I filled in the forms for webafrica to install a fibre in my house, the problem is their system couldn't link with my bank account, now I've got more than 3 weeks trying to cancel the application, I can't get any assistance as their operators will post you, and you will hold for more than 20 minutes without any assurance. This is so frustrating because they have blocked me, as I cannot enter into contract with other service providers. I don't see any professionalism in their operators.