Hey @DanKemp,
We have a similar case. However, we did it on purpose, but expected to be billed only the month we were using it. The next month we also removed all contacts to non-marketing. However, billing, account manager (she doesn’t even respond, only when I ask her about expansion), customer succes, etc.. all respond the same.
So unfortunately, I can’t help you. What I do think however is that we combine other customers to force Hubspot to change this ridicilous term. Because I get I have to pay if I use more, but not for my whole contract.