Milma — Milk gone sour next day

I bought 5 packets of milk on10 August from Selex mall Thrissur with expiry date 11 and 12 and was promptly placed in a new fridge. Unfortunately, 3 of them became sour next morning. The matter was promptly reported to Selex mall immediately. They said milma company was responsible for this and somebody will call me for redressal of the complaint. However, nobody has called me till this time. Please take necessary action regarding this. The copy of receipt cannot be enclosed since this site not accepting pictures above 2mb size. It can be sent separately by mail if necessary. Waiting for a prompt reply as early as possible.

Thank you.