I did two days work on 27th March and 3rd of April this year. I've sent several polite emails and have now re-sent the invoice, as they requested, three times.
Last week I emailed to ask again, politely, when the invoice was likely to be paid, but was never emailed back.
Time to charge interest perhaps? But how do I go about this?
They are a big glamourous media company, I'm a foolish, ignorant freelancer. Help me sound like I know what I'm doing please.