Billing

The worst customer service in the world. i have raised queries about my billing, called in numerous times, spoken to 6 differect supervisors/team leaders. who all promise to call back with feedback or to resolve the issue, not a single one responds. you can never get back to that supervisor, and you have to start the process again, with consultants who do not understand simple mathematics. Each time spending over 40 mins on the line. they overcharge you, and make you pay or cut you off, even if they have no reason to charge you extra. they hold you hostage, and you can never get a billing issue resolved.this must be *******, and reported.