Consumer Redressal

Dear sir, I had given my Lenovo G570 laptop to its service centre located in goragaon W Mumbai Named as Ultimate solution Before a month ago. Thre was a keyboard problem in my laptop. They had solved this problem and charged for 2500 Rs. But after 10 days only i got a problem in power supply in the same and again given to him to repair and they cause another problem with the power supply and had damaged the Mother Board of my laptop and now saying to change it. It again cost 15000. But for their mistake how can i pay this large amount that i cant afford it. This is a large amount and also damaged my laptop in a wrong condition. and now behaving in a wrong way to me. Please help me sir as i cant pay this much amount as i am not at that condition to give this charge again. That they had make my laptop worthless. Please help me. Thanks , Prabhakar T 7303631265