When you hire and attorney and they are not handling your case properly what can you do?

I hired and atty 5 yrs ago to handle a divorce. So far I have done most of the work on the case even presenting the case in front of a Master.( with the atty present and not saying a word) The atty continues to bill me and since the house had to be sold for settlement he now has had the money in his escrow acct since Dec 2008. 3 weeks ago he said he would disburse the funds and now since he wants more money for the divorce he will not release the funds. What can I do to get this matter resolved. I feel like I have been taken advantage of. He has me on a wild goose chase for 5 years telling me we would not have to sell the house the ex would be responsible for taxes and home owners insurance and bills that were left and none of that happened. please help