Airtel — wrong calls and messages

Address:

Cachar, Assam, 788001

Recently i have renwed my 3g sim to 4g lte (In december 2017). I have been receiving a lot of wrong calls from few days now (11 jan'18 ~ 3 wrong numbers | 12 jan'18~2 wrong numbers | 13 jan'18 ~ 5 wrong numbers).5 different wrong calls a day cannot be a coincidence. Even, i get watsapp (Logged in with the same number) messages from different people i don't know. I guess my number is getting mislinked with other's numbers.