Paying back a loan to the heirs of the deceased after the death of the creditor
Q: I borrowed 40000 US dollars from a friend of mine in America in 2008, which was equal to Rs 2500000 at that time. Our verbal agreement was to return the money in dollars. I could return $33000 through money changer, then there was a ban to transfer of dollars to another country. My friend passed away in America. I informed his family about the remaining amount and requested to collect that through someone travelling to Pakistan. After that there was no answer. I sent a registered letter on the given address but that letter returned to me as there was nobody to receive it. There had been correspondence on that address. I tried to trace them by other means but could not find them. Three years have passed. The Dollar rate has increased more than double. Please advise me in this regard.