Account confirmed closed 6 months ago - But still you call......

I closed my account with Tracker end of November due to repeated unauthorised debit order attempts. Copies of the correspondence between me proving that the account was closed and that Tracker has acknowledged it. 6 months later you still call me. 3 to 4 times a day. You cannot tell me why you are calling me as the notes on your system in front of you tells you that the account is closed. If I don't answer on the cell because I recognise your number you call my work number. To say what? Your call centre operators are embarrassed by their management who cannot remove unnecessary numbers from the call logging system.