Hi, i am in need of some advice. here is my situation.

I live in ibiza, and have ben a resident for 6 years.
Last year i started working for a company (not legal) installing satellite dishes.
My boss never paid me regularly and ended up owing me a lot of money.
towards the end of the year he got his mate in to replace me, who is now bullying me saying i have been stealing from the company and he has had to put right a lot of work i did and is now saying he wants money for what he's had to do. It has got to the point where he is threatening me with violence. (He has already hit me once, now says its going to be worse this time) (these messages are on Facebook)

I know i don't have a leg to stand on getting money from my boss, but this is not what i want, i just want to be left alone to get on with my life.

What can i do?

Any advice will be much appreciated.
Thanks