My internet connection was disconnected in error last November and I was re-connected and put on a new plan which included Unlimited Fibre Extra and Unlimited UK and Mobile calls and a monthly discount of £15, for the duration of the new 18 month contract. In May I received a bill for £176.54 which I thought was quite excessive for a month! I queried this with the helpdesk and they said it had been resolved. However you started taking payments again in August and the £15 discount has dropped off which means I am being heavily overcharged. How do I get this corrected?