Hi Larry,
We apologize, but this is an issue that must be resolved between you and the other merchant. We are unable to compel another merchant to make payments to you, nor can we take the role of a mediator in any disagreements between the two of you.
If he has decided to end this affiliate relationship and make no further payments that is at his discretion.
The only way to remove your account from his affiliate program would be for him to delete you, but otherwise even if he chooses to leave your account connected to his program you are not under any obligation to continue promoting his products, especially if he is not paying you.