Disgusting lack of service from Rain

So...... I have been with rain for many years and really found their service great, never had an issue till i needed to cancel as i have moved house and there is already internet installed. I contacted them well in advance to make sure that it was in time for the end of the month to cancel my "cancel anytime" subscription. I have 5 different reference numbers #***0 #***0 #***0 #***0 #***0 I have yet to receive a response from any of them. The CCD couriers have already collected the router from my new address but i am still being charged for something i no longer have in possession nor am i using. You cannot get hold of anyone at Rain - not one of my reference numbers have had a reply over a month later. Whatever you do do not use them -= ever they are sharks and their service is non-existent!!!!