Allow me to try an alternative route. I've send them an email to the address, let's wait if they replied me or if his transaction went through [whichever comes first]. If there's an issue with the email address such as what he described, my email should also be failed to reach them. If it does... well, we clarify at least one thing.
I wanted to do the same thing, to test their email address. Did you get a reply yet? Generally, it does not take much time to get a response from the server if the address is not correct.
They have another address on the website, has it been checked as well?
None so far, but that's to be expected. I think 48h response time is acceptable, especially considering the nature of my email is not so urgent. It didn't bounce so far, and although gmail [I use my gmail account dedicated for spam to try this] will keep trying to send a message up to 3 days --or so, I read-- before it gave up and mark the mail as failed, based on my very own experience, I agree that it should be within a very short time frame if it bounced off. I'll keep us all updated from my side.
I didn't send to the other email, though. I think it'll be quite redundant and just clog their system, especially as
Andrew77Elton5 send the email to "support" and the purpose of my email is simply [to be completely honest] to prove or disprove his claim. What do you think? Shall I shoot them the same email to "adv"?