Cannot cancell landline. Yet being billed for it.

I have been trying to cancel my landline after I moved for 2 months.

Still being billed.

As it is a business landline it cannot be done via the phone. Have submitted the paperwork and required documents 3 times, called the call centre 3 times and emailed consultants as well.

No replies, no feedback.

It's the end of the month I I will likely get billed for a third month.

I feel completely helpless, there is nothing more I can do from my side. I just get told to email the documents.

This has cost me money and valuable time.

For a fourth time I will have to call the call center ( at exorbitant fees per minute) and explain the entire situation again.