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Solicitors can charge for waiting time in court and for certain transactions in which it has been agreed that the solicitor will charge on a time basis. Can you explain your exact situation a little more?
That is nonsense. Unless the solicitors can point to a contractual increase in fees owing to the passage of time or additional work incurred they can't impose an increase like this. Waiting to hear if the house has been sold is a comedy reason, frankly.