Phone repairs

I took a contract wiyh mrpmobile last year for a prestigio tablet.the tablet was delivered to me around april 2015,and its a 24 months contract.on December 2015 i sent a mail to mrpmobile informing them that the device is no longer working.it was on the 21st of December when i sent the mail and received a reply on the 5th of January 2016 from Nerasha Randhani,she said for repairs i can contact prestigio,i am surprised cause my contract is mrpmobile not prestigio,why do i have to contact prestigio because they are the one's who contacted me and offered me a contract not prestigio.i have no business with prestigio.you debit my account every month tor the device that is not working.15 months left for the contract to end.i won't be paying 15 months for something that i am not using.