THEY MUST PLEASE CLEAR MY NAME

Last year 20/12/2014 I have paid my edgars Account, they have send me to MBD and the MBD people contacted me and I paid my account all at once as a debit order from my Account, but till today my account still reflect as an unpaid at I.T.C and when I call the edgars call center they always give me bad and very rude service till today, the kept on telling me that my account is paid up and there is nothing they can do. I really need to move on with my life and I cant because of them. I really regret the day I walked into their business. Please help me .