account

Hello I had an acc at nwj jewelry so on the 12/08/14 I went to the shop to close my account because of too much interest Moses call them for settlement amount they said it's 280 so I paid that amount and write a letter for closing the acc. But still they sent me sms that said I'm owing them the amount of 280 .I've been running up and down trying to fix the problem they keep on saying after 24 hrs they will fix the problem they gave me different references but still I don't get help .people from black&amp