I'm going to assume that you are seeing 'Apple Receipt' on an emailed receipt.
My purchases have always (on the occasions that I've checked) shown pretty much immediately on my account's purchase history on my computer's iTunes, and on the 'report a problem' site (on the two occasions when I've had problems with what's downloaded and needed to contact Support). It doesn't show on iTunes nor the 'report a problem' site, and you only have the one account (if using family sharing you were logged into your account to rent the film, an organiser receives receipt for members purchases ? If it is the emailed receipt you should have the order number on it, so could potentially use the above contact form