Business English classes in La or CA (Los Angeles)

Hello everyone,
My name is Jowita . I'm from Poland.
This year I'm going to study English in LA or in other city in CA for months.
Because I work in American company I need to improve my English as fast as possible. I'm looking for business English classes or general, if possible not to expensive ( not more than Protected content per week) or free of charge.
Can you help me, please.

Thanks in advance :-)

Have a lovely day

Jowita