MWEB Billing/Cancellations Department

I am trying to get hold of anyone at MWEB as they have not cancelled a subscription on a fibre line. (previous tenant and a unit I moved into) This is now causing me a delay in my activation with another ISP. I need this line to continue making a living.

Their phone lines makes it impossible to get to someone, the Technical department cant assist and when they transfer to Client services, the call cuts. I phone again and same thing happens, one cannot even get to the billing department. The voice prompt also simply states, we cannot take your call right now and the call cuts.