We've never had an affiliate account with them.
This is not good. If you recall FratPad did this and from what I've read it hurt them.
One thing I've learned over the past year is that an affiliate may send nothing today, but they may become a big fish tomorrow.

I believe that affiliates work so very hard to earn sales, send traffic, etc. They need to be taken care of. Within reason.

You may have not sent sales or traffic, that hurts you, and in all respect it makes you feel bad.