Rude attorneys

These people consultants are so rude,they call me regarding one of the accounts and if I tell them I have already sorted that account with the other attorneys they insist I still owe,then I I asked to double check they told me sorry accounts has been removed from our system and I asked then why you called me ?the lady was so rude and dropped the phone on me.2 weeks later I get another call still being asked to pay and explain that last person said accounts is moved from their system. I asked for the references so that next time they call I'll give them references number.guy said "I just told you the account is closed no one is gonna call you just like that