Compare DTH — paid but no dish tv utill date

Hi i bought dishtv hd+ with recorder via line payment on 20th may 2015 with the following reg.no 17986275, but till date 5th june 2015, no dish tv has been supplied or fitted at my premises repeated calls and chats to various managers has not resolved the issue more over looking at all the reviews and complaints ome of which the local service center fitted old set top box etc... i don't want to go ahead with dish tv... and request refund of the amount please kindly help me in this direction.. thanking you in advance. john