harra*****t on account that was closed and paid up

this company is been harassing and threatening me on the mr price home account that was paiid up and closed 4 years ago and when i called mr price confirem that this account was closed long time ago, but mdb is still claiming that i still owe them and they added their own charges, they refusing to give me the full statement on this account. this company did the same thing with my game account. this company needs to be reported and closed, what they doing to people is not legal.