Pathetic Service, poor communication

I received a mail addresses to a different name and surname claiming I am almost R23 000 in arrear with my Mogale City Account. You can phone your budd off, everytime a very rude person answers and bark at you to get the name of the so called account that is in arrears. Then the person says she will transfer the call to the relevant department and then in a second the phone goes dead. I have been trying to get hold of anyone, but it is impossible. I even send a mail to Mosa Papane @ ***, needless to say, no response, NOTHING! Account number: *** - addressed to Michelle du Preez, but my name is Annelize Peirce and I have never had this account with Mogale?