Is this natural? If I speak some impolite charset or sentence, please forgive me and tell me. You know, I'm a beginner of English. That is not my real intention. I want to know is that sentence natural? Thanks!

My new friend. My new friend Peti is an Hungarian. He is very friendly and patiently. He told me what's difference between American English and British. It's sounds difference. The American English is easy understand. The British sometimes be hard to understand, but it's depends on people. That's the same for me.Because I'm a beginner.lol~ ( for and of, I don't know which one to use , May be this sentence is incorrect. I want to say : The American English and British English is no difference for me ) Listen radio and interviews ,they are great to practice. I fell I'm so stupid, because I'm slow to learn English. But,I won't give up!

what's mean "we got company" ???

I watch a film named "Leon".

One person will kill other person.

That person say : "We got company!".

I can't understand! 

I think he should say "We have problem" or "We are  in trouble ".

why he say "We got company"?