Returning extra money that one received as a refund
Q: I live in a rented apartment in the UK. Before renting an apartment in UK, we have to pay a deposit which is refundable when we leave the apartment. By mistake my landlord created 2 deposits and I got twice the money back when I left the apartment. I contacted my landlord and told them that this was a mistake on their part and they told me they will contact me soon about this issue. They haven’t contacted me yet. Since I have done my duty of informing them and if they don’t ask for it back or claim it, is it halaal for me to keep the money?