ISP Fibre release

I've bought a property and took occupancy on the 2nd of December. The previous owner used mweb as their ISP. The relationship between the previous owner and I are not great due to complications during the property sale. They requested a migration to a new property but the current fibre line is still active in their name. I'm the current owner of the property, the migration order is in place, I've been without internet for a week and a half yet mweb refuses to release the line so I can coronet my own ISP to the fibre!! Even though I'm the owner of the property!! The arrogance of staff in the call center is shocking to say the least! The unwillingness to assist is unbelievable!