Would the zoldycks accept collateral as payment?

Having this idea for a zoldyck butler oc lying around in my head and wondered: if a client was unable to pay for during a service due to unforseen circumstances* (eg. their bank went bust mid hit) could they offer the zoldycks anything else in return? Like,

"hey, I know we said we could pay you at the outset, but these circumstances happened out of my control. It was not my intention to stiff you and I was wondering if I could give you something in return? Houses/land, a private island, magic nen heirloom, a favor or service etc?"

My assumption about this oc is that their parent was a client but became unable to pay (either because they didnt want to or were unable to) and decided to work with the zoldycks to pay off the debt. But would the zoldycks accept such a deal?

*I think the zoldycks would consider solvency when deciding to take a hit or not but they are not accountants and cannot predict every financial scenario.