Requesting a Waiver for Unused Google Mailboxes: Seeking Guidance

Piling up Google Mailboxes Costs Hey I worked with an external vendor who brought a few mailboxes. I entered my card details and paid for them. The engagement with the vendor was short-lived. It has been 3 months since this happened, I received no email from Google about the active subscription and presumed I'd automatically cancelled since no charges were made. To my suprise, I'm being asked to pay for 2 months where I've not the mailboxes. I cancelled all the additional mailboxes yesterday. There is one mailbox that I'd like to renew. How can I handle this and ask Google for a waiver on the mailboxes not used. Is there an email that I can talk to?