Unfairly Billed

I'm flabbergasted by this company I lived there about 5 years ago and left during the month without even completing my full month stay they have been flooding me with calls and messages for the past 5 years claiming that I owe them when I call in they are Rude today I spoke to a African lady who was extremely rude spoke on top of me no manners what's so ever when I ask her who she is or to speak to a manager she refused and cut the call on my ear this company has handed me over to credit Intel who is also flooding me with messages that I owe citiq proper this is pure harassment and can no longer take it anymore if no action is done here I will take it with my lawyers..