Foreign Currency Coins

I have got some foreign currency in coins.

4 GBP (POUND) COINS 54 PENNIES (GBP) COINS 2700 KOREAN WON COINS

I want to sell them (i am low on money) . I know they are not very much in total like 2200-2300 approx but it will do the work for me, i have tried to sell them in currency exchanges in Katchery Bazar but they denied saying “We dont purchase coins + They are not very much”. Is there any currency exchange who can buy these coins from me without focusing on the amount of these coins. If there is anyone who is purchasing coins please let me know, it would really help me.