Karbonn — Not giving bill and ill mannered staff

Address:

Mumbai City, Maharashtra

there was a problem in the charging pin of my karbonn mobile, i went to karbonn service centre in Malad west, mumbai. there they said it will cost Rs. 450 and they will not give the bill they say giving bill is against company policy. and they were talking in a very bad manner. i tried to contact karbonn helpline no. but they dont work. kindly help me take strict action against these people.