Airtel — My whatsapp has been hacked

Respected sir, On Monday 14/6/2021 I got a msg my whatsup has been banned, so i did ask for help from whatsup support, within few hours they activated. Than this was happening daily until Thursday 17/6/2021.Than when my whatsup got reactivated to my uttersurprise thier were so many msg from unknown numbers, I was shocked to see it. Know I m scared that sombody is using my no number for some spam. I am a simple house wife, and this number is used for my daughters online classes. Sir pls look into this as early as possible. Yours thankful Arshiya shaikh