Kellogg's India — All bran Wheat Flakes

Dear Sir/ Madam,
I am the regular user of Kellogg’s All Bran Wheat Flakes since more than 6 years.
This week when I opened a pack ( Aluminium Foil ) of ABW flakes having details of Date of Manufacture / Batch No 24JUL21 / 16.52 S2B240721
I found lots of shell worms along with flakes. subsequently I have discarded the pack.
I have opened another one and found the same today.
I have opened the third one and it is consumable..
Can this be expected from an MNC most trusted brand .
Please advise me what is next step before I bring it the notice of other forums.
For your information I am enclosing pictures.
Awaiting your response.
Regards,
Indira Sai

The above message has been received by Kelloggs India on 14th December 2021. But no action / response till date.