Why?

Why do I keep getting clan challenges when I don't have a subscription? Now I have 40 games going and I don't have time for that. How do I get rid of them? I thought I had my setting set so that this wouldn't happen.

You have agreed to play for your clan's league. Thus, you are given 36? league games. You will be removed automatically from the clan shortly but until then your leader can continue to include you in challenges and had already chosen you for the clan league.