Meesho — Meesho Prize Letter

I have received a letter from meesho online shopping by india post.
Mentioned on the occasion of 6th anniversary of meesho i have won gifts/cash prize and i have to call a number and inform gift code to confirm win of prize.
the number i suppose to call "[protected]". In Rules they have mentioned All Charges+Government Taxes will be collected in advance.

There is a barcode on top of letter, scanning barcode displays address and phone number "[protected]".

Take action against this scams

Our concern is How Does My Address, Phone number is exposed to them. Does Meesho take responsibility of their customer data leakage ?