Whatsapp — whatsapp blocked my number without any my mistake

Dear sir
Whatsapp is blocked my number with out mistake,
Plz help me sir .My business number closed.iam loosing my earning,
Entire my family depends on me .Whatsapp business is my only earning, they changed rules and regulations suddenly without any intimation, how would we know .
No one is given any complaint on my number,
They did it mistakenly, pls help me and save my life,

Please sir