My sister and I feel that we were taken advantage of by our attorneys and by our brothers re: payment of legal fees. What can we do about this situat

In order to avoid a Guardianship my sister and I agreed to a Stipulation For Settlement. In the agreement it states that my sister and I were responsible for all of the legal fees and costs incurred from the legal proceedings. We asked to review our brother's attorneys invoice and we were not provided a copy to review because we were treated as insignificant persons. Their attorney fee's were written into the document to make sure it would be paid & legally binding. OUR ATTORNEYS decided to piggy back their legal fees into the agreement as well without providing us any invoices to review and approve because they didn't have any invoices to provide us. My brothers agreed to pay ALL of the legal fees which were to come out of our Trusts and they didn't consult with us either regarding all of the fees . My sister and I feel that our brother's attorney's fees were excessive and our attorneys inflated their fees. We were taken advantage of by our attorneys and by our brothers.