Home Connect is holding the line

I had an internet with home connect and I had to cancel it because of poor internet and I moved to another service provider Webafrica (ISP) and now Webafrica cannot reactivate the line because Home Connect did not release the circuit when I called them they said the line was released on the 1st of December even Zoom fibre told me that my previous ISP is still holding the line I'm so frustrated and I don't know what to do because it's almost two months now without internet can you please intervene l can't do anything