How to stop a spam email hiding behind zoom No-reply email address

A business has sent multiple times in the past year, emails with zoom links , that pretend to update me on missing their previous event. Though they included an email address in the text for me to make enquiry, I repeatedly email to that address to unsub to no avail. Effectively, this person has successfully hide behind zoom no-reply email address that I cannot unsub. Anyone can help me? Or zoom has a means to trace that user to ban it from him or his other staff/staff/users from creating zoom links to spam others? Or zoom has find a way to stop allowing users to hide behind its no-reply email address while sending out links to legit participants?