Ole ole Did not get paid for work that I did Warsaw Poland

Back in March of this year I was contacted by Ole ole to help with proofreading and correcting grammatical issues. They stated that they were a company out of Poland and that they wanted to get into the US market. Since English was not there first languag. The wanted help with sentence structur. I did this work for the company’s for a week. I am yet to be paid. They keep giving me excuses on how they could not pay me. They stopped emailing and calling 2 weeks ago. All I want us to be paid for the services I provided.