We’re currently seeing reports of data appearing to be instantly consumed upon purchase, by some members who also purchased data last month.
Please open a help ticket, describe the situation as you’ve done here, and ask that it be investigated as part of master ticket 1852173. Our Help Team will need to get this resolved for you.
3/30/20 EDITED TO ADD: Master ticket 1852173 has now been resolved. If you are seeing a similar issue, please do not reference that master ticket, as doing so may lengthen the time it takes to get your issue resolved.
(Pinging @Ambassadors for situational awareness.)