If The Mix London contacts you about a study, don't bother.

They don't pay as promised. I've tried sending several emails to different email addresses connected with them and I don't get an answer. It's very distressing because this study took roughly two hours of work a day over the course of a week.

Any of you guys know of any actions I can take to get my money? Would the Better Business Bureau be helpful if it's a foreign company? I'm out of ideas.