Originally Posted by
percysmith
If you try to pay £50 but the merchant wants $550 (approximately £4/$40 too much), what I meant was that you could offer the merchant to solve this by giving you back £5 in cash and then skip the chargeback.
If the merchant charges £50 in HKD, refunds £50 in HKD and then charges £50 in GBP, then an extra £50 is locked on your card until the refund is posted to your card. This could be a problem if it happens a lot and for large amounts.