Never work for them. Management lie's, also your team-leader. Most of the people have two-faces, can tell you one and doing something different. I was cheated like I was never in my life by anyone. I strongly advise against to work in this company. HR, manager and team-leader are friends and will never help you.
The reason of ending cooperation is also a lie.
After all, they don't want to give back your money, don't want to pay for extra hours you work.