Nokia India — mobile is not working ,nokia is unable repair

Address:

Krishna, Andhra Pradesh

i had buyed nokia lumia 520 mobile last year, now after out of warranty my handset got repair, i had given to nokia customer service center, they had taken my handset after 20 days they saying there is RAM Problem( Error: Unable to find bootable option. Press any key to shut down) . service center is saying we cant repair it . what can i do buying a such company phone.u think this is company that manufactured company cannot repair the product...pouring thousands of rupees and buying this type of company phone is correct .