Accidentally tapped 'Unsubscribe' on webmail, can it be undone?
I was looking on webmail on my phone's Chrome browser last week, at an email from my energy provider to whom I'm signed up for a power shifting trial - they send out opt-in emails for each power shifting event. Unfortunately I accidentally tapped 'Unsubscribe from mailing list' on the email, rather than the 'Load images' button just below it. Since then, I haven't received opt-in emails from them.
The action generated an email which I can see in my webmail Sent Items, sent to them to unsubscribe. I've been in touch with them, but on their records I still show as signed up for mailings. They've asked to check if there's anything that can be done at the VM end to undo the unsubscribe?
You say that you inadvertently unsubscribed by tapping "'Unsubscribe from mailing list' on the email," By clicking that link in the email your request to unsubscribe was just between you and the energy provider and nothing to do with VM at all.
It sounds as if the support staff you spoke to were simply fobbing you off by trying to pass the buck to VM.
You definitely need to go back to your energy provider, they are the only ones who can resolve the issue.
Coenoby