Nu Debt DONT KNOW WHAT THEY DOING

During 2018 my contract ended with Zone Fitness, I went online and cancelled the contract, years later I get summons from Nudebt stating I woe Zone Fitness moneys for my contract, but it was cancelled, I am fed up with them as they dont listen even spoken to the GM with out any joy.

These people just dont listen even after sending them the proof from ZOne Fitness they keep on harassing me, wonder if their partners know where they work.