Mother Dairy — yogurt pack puffed before expiry date

Address:

Chandigarh, Punjab, 160036

Hi I had recently bought a pack of yogurt from Reliance store. And I had kept it in refrigerator but when I took it out today to eat I saw that the pack has got puffed and hard. Its manufacturing date in 27th June 2018 and since it is best before 15 days so ideally we can consume it before 11th July 2018. And today it's 5th July 2018.
Kindly look to it.