Amul / Gcmmf — Denied to replace milk

Address:

Pune, Maharashtra, 411041

I had buy one ltr milk from Amul Parlour - Narhe Gaon ( Near zeal collge chowk) Pune on 25th Evening. But it is not good while warm it. When i went to Amul Parlor they denied to replace it and told us that don't buy Milk from our Parlor. If you are not interested to sell it the why it is opened. How can they told don't buy it from Amul. Is this way to behavior with consumer??..this lady not interested to listen. Kindly let me know the where we can escalate this.