I have puchase a gold mangalsutra from the sonoka jewellers ahmerst street kolkata before five years now we have checked it and it is of 17 carat instead of 22 carat which has been written in the bill and we have paid for the same so i want to know that should we launch a complaint against the jeweller because it is a metter of before 5 years.we asked the jeweller to return the money but he is not ready for this.