Gokul Milk — Milk turned sour within best before date

Address: Gokul Shirgaon, Kolhapur

We have been buying Gokul classic pasturised full cream milk (MRP 58 per litre) for last 3 to 4 years.
Today bought 2.5 ltrs (two & half ltrs) & date best before use put on pouch was 3rd July 2021 (ie today). The store keeper had removed from refrigerator before handing over to us & we also put in our freeze as what we have been doing every day.
In afternoon when we wanted to use the milk, we found that the entire milk was spoiled & not fit for consumption. This has never happened earlier with us but this is warning signal for us.
Request company to refund the amount please.