Consumer Redressal

My dad buyed a godrej fridge from direct godrej dealers, who held house to house sellers and a fair like showroom near aashiana thane... They offered good price for the fridge in exchange of an old on as well as a new godrej mixer grinder as a free gift... We have not received the gift till now... Which was estimated arrival time to be in march... But when we complain to dealer he says that there is no stock or most of the time the gift will be shipped from mumbai branch and all these nonsense which we were not told about on purchase... I would like to drag them to court for such fraud... Please help me.