Commercial Solicitors

pls i really need

Callers offer your home to sell you something - or door-to-door salespeople.

Lawyers
They are employed by companies are sometimes fully employed in companies they cover con also small businesses. but generally not on the individual cases.

Maybe they are hawkers, door to door salesmen.
depends what country you are
Prosecutors could mean different things in different countries.

Solicitors for the people who sell something ... Business lawyers can tell the people who sell things to commercial and individual (residential) consumers, or it may simply mean that people are selling things like a business (commercial).