My ex wife has denied me supervised visitation for 2 years now. I am allowed to speak to the children on rare occasions. I pay child support on time.

If you have a Parenting Plan with visitation, supervised or otherwise, then you should be able to enforce that Order. Since you were married, that action may be in the Circuit Court, which is a difficult place for someone with no attorney. You need a Petition for Contempt, which is pretty serious since she could, possibly, even go to jail.   If you have a support order, but no parenting plan, then you will have to Petition for a Parenting Plan, so you have something to enforce. That is also not something easily done without counsel.    Once you do get in the door, it sounds like you are going to need some reunification counseling with your children. That may be another expense. The Court can fix the no contacting part, but it can't fix a child who thinks they hate their father, and it can't make him feel wanted. Whether as part of a Court Order or not, the relationship needs fixing.