I presume that either or both of your siblings are executors of your father's estate. As such they can't change the provisions of his will just because they want to. Whether his will says that or not doesn't matter. They just can't do it unless all beneficiaries agree to what is called a Deed of Variation or Deed of Family Arrangement. So unless the will specifically provides that the £60000 was to be taken as a payment to account of your inheritance they are treading on very thin ice and cannot hope to get away with this. I suggest you see your own solicitor immediately to take the legal steps to challenge them. I hope that helps. Please leave a positive rating so that I am credited for my time.