By the time the Receiver, the Solicitors, and the Sales Agent all deduct their fees, you may find that there's a lot less in it for you, then you first hoped. Then there's also the likely penal interest and fees that have been applied to the original debt.
The Receiver is resposible to the Fund who appointed them, and will provide a statement of the sale price and related deductions, to the Fund. I can't see the Receiver having any obligation to answer queries from the former owner of the property.
The Fund in turn, might provide you with a copy of that statement, along with a transaction statement to show all entries on the historic loan account.