Help me save my business

Hello to everyone, my name is Irfan Sultanović, I own a business in Bosnia and Herzegowina. When I started my own business it all went well in the first few months. Then I started to work for a german company for which we were selling their products. After three months of working for them I got 4 more people working for their project because it was a good thing. Giving them a respectful paycheck so the workers are satisfied. In the third month they rejected to pay for our duties and just neglected everything what stood in our contract. After that I had to pay my workers out of my own pocket and I am 26 years old so I didn't had much in my pocket. So I had to borrow the money for the paychecks and for the taxes. Now I'm in a big messy debt. And I would be very grateful if you helped me pay it off and help me regain my business and rebuild it.