In my area the convict has no say at all in the PO he or she gets. And, virtually no request to change PO would be granted. Cooperating with authority figures is a part of becoming a mature adult, and so is cooperating with people you don't necessarily get along with or agree with. If you have a legitimate complaint and think your PO acted illegally, you can complain to the supervisor. However, it is most likely you are going to and will have to learn to deal with him.
If you stay out of trouble that goes a long way in getting along with the PO.
Good luck to you.
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