bad service

We have a bond account with absa that we have settled last year already and cancelled the insurance on the house but we keep receiving letters that we owe the bank we are so tired of forever going to the bank to get the matter resolved,we went to Germiston branch got assisted by Mr Ncobo who confirmed to us that the matters is resolved by today at the post we got a lettr from absa with our bond statement saying we owe the bank,Account number ***.Absa please sort out your mess.