Also what has worked for me is I'll send a fax to the attorney that is shown on the Lis Pendens and include the HUD-1 Settlement statement that shows the net amount.
Ask your Realtor to get a copy of the HUD-1 and ask her if she'll fax a note to the attorney that filed the Lis Pendens for the investor that actually owns the mortgage.
Lastly if you did NOT receive a written copy of an approval letter from the lender, ask for a copy. You absolutely can't even think you will ever close without having the approval letter in hand. You normally have to close within 45 days after the approval letter is written. If there is no approval letter, then the price may be too low. Was an appraisal or BPO already done?