How long is a pre-authentication charge hold on pending list?

tiendq

Hello,

Sometimes a merchant makes a pre-authentication charge on my card, then for some reason the order is cancelled later, they said that the transaction will be fall off after 2 business days. But I often see these transactions are still kept in Pending Transaction list for a week, or even 2 weeks or more, before falling off.

How many days a transaction like these will be hold on pending list, according to Payoneer's policy?

Thanks,