Divorce Advice for Men | Fathers Rights Divorce | Child Custody

My boyfriend has been divorced since 12/05. Since then he hasn't been paying his child support like he should have. He has supervised visitation until she see's fit(so the papers say). Last summer, she let him take the kids to Florida for two weeks. Does that stop the supervised visitation? The state of Florida has stepped in to collect the child support. I, being a divorced parent who collects child support, and needing the money to help support my children, know how important child support is. With my encouragement, he is wanting to get caught up with his child support. The papers also state that he is to get unlimited phone calls before 9 pm, unless it a emergency. She only allows him to call on the weekends, when she has free minutes on her phone and after 9pm. When he does call she will not answer the phone. She is also using two last names. How you ask? She is using my boyfriends last name on some things, and her either ex husband or soon to be ex husband's last name. How can she get away with this? Also, the papers say that at all times both parties must supply a address and phone number. She has not done this in the 2 years since the divorce. What do we do? She filed a comtempt of court charges on him for the final hearing of there divorce but he was in the hospital is there anyway to change that comtempt order?