Edgars needs to fix their account department

I closed my Account with Edgars, i went into the store and paid my account to zero then asked them to close the account, almost a year later i'm still getting daily calls and being harassed and handed over for money owed, every time i tell them that the account was paid up and closed they say ok they will log that and guess what the next day i get harassed again, surely this is not legal