Paid invoices shows open

Hi,

I have 3 invoices which user says it has been paid. I don't see any receipt for the invoices.Invoice is still in approved status and has open amount. I dont see F03B14 ,F03B13 record for the invoices.I also checked through receipt details in P0B2002 where i found no receipts linked for the invoices. For the invoice amount the receipt which user denotes is still unapplied.Strangely i cannot match invoices for any receipt. I tried creating new receipt and when i tried select i dont see any invoice from the three.

Now i cant match the invoice neither it was already matched. Now how could we resolve this.