How do I file a consumer protection case?

Dear Sir/Ma'am, On 17th Feb 2019 at Mira Rd Station, there is one company who were selling Expired flavored Milk can with the MRP of Rs 35 and they were selling for Rs 10 and by overwriting the manufacturing with Promo written on it. I rubbed the promo and found that the milk is expired. I called the police and they have confestigated all stuffs. Now, Police have taken my statement, however, they are not registering the FIR. I firmly believe this is just not a matter of NC and FIR should be

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I admitted my son in one of the well known institute in Mumbai for JEE coaching in July 2018 (Allen Career Institute). I paid Rs. 1.50 lakh rupees as one time payment. They assured that they will teach my child properly. But my child told that they are not teaching properly. I told them but they were least interested.My child stopped going to classes from November month. His course will end in May 2019 (JEE Advance exam). I told them to refund the fees but they declined claiming that they have