Constant incorrect charges on my Credit Card

<p>Please can a senior Team leader call me yet again. Every month i have GB charges, i dnt have a GB cards. i refused to take due to the incompetence of the CC agent. After explaining my story 6 times last week to eventually get credited what was due. i look this morning and they have again charged me for something i dont have.. What does it take to get this sorted. or is it easier to just close my account?</p> <p> </p>