Hello Ross and welcome to the Cow Audio Forum.
You say the outstanding bill is less than 30 days old. Unless there was an explicit agreement, in writing or verbally, that payment would be made earlier than 30 days, I'd relax. 30-45 days is not unusual for some of my clients. OTOH, I usually have "out of towners" cut me a check on the last day of the shoot.
Was the invoice submitted in a timely fashion? For some payers, the pay cycle doesn't start until they receive the invoice and I have known audio and other craft people who are notoriously late to invoice.
At this point (less than 30 days), I'd suggest you stay out of the middle and let the two work out the details.
Regards,
Ty Ford
Cow Audio Forum Leader

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