You could change solicitor but having come this far that might be counter productive. Assuming there is a legally binding agreement with the deceased neighbour, then the executors would be bound to follow through with the grant of the right of access. To do that they do have to have Confirmation from the sheriff court (known as probate in England). That can take some time depending on the nature and extent of the estate. I'm afraid you will have to wait until the Confirmation is granted. There is no other avenue that would be quicker in the circumstances you describe. I hope that helps. Please leave a positive rating so that I am credited for my time.