Vox Telecom - Poor Service

I now followed procedure to give a months notice to Vox Telecom. They cancelled my services, but have not released my line. I am now told that they only have 2 people to do the whole countries cancellations and this will take 2 days as they have hundreds of cancellations. They can cancel my service immediately, but can't immediately release my line how does that even make sense. It also does not make sense that they have hundreds of cancellations - then they should already be out of business.