Support costs money. Some customers are worth supporting because they are, or have the capacity to be, profitable. Some customers are not worth supporting because the cost of supporting them is greater than the profit that can be made from them. Differentiating between profitable and unprofitable customers is a critical skill.
Can You Risk Supporting An Affiliate Program?
There is an over-abundance of affiliate programs available. All eagerly invite you to participate. If you like, visit AssociatePrograms.Com. Allan Gardyne has the most comprehensive list of programs I have seen. Almost 3000 of them at the last count I noted. And he reports thoroughly on each, as information becomes available. (Allan does a super top job in this.)