Asked to send a photo of my gas meter by email - what is the email address to use?

Earlier this year I received an email from a customer service advisor at Ovo Energy asking me to email her a photo of my gas meter - this was to clear up questions regarding which meter was mine (I live in a flat and there are several different gas meters in the property).

I had to wait a couple of weeks to reply as this is second home and imagine my disappointment when, after I sent the email reply at hello@ovoenergy.com I received an instant reply saying that “for my convenience” this email was no longer managed by Ovo. So I rang up and asked one of the customer service advisors which email to use. After rather a long time on hold I was told that the email to use was: customerservice.admin@ovoenergy.com.  So imagine my disappointment when I emailed the photos over only to receive an immediate reply saying this email was “unable to receive email.” 

So my simple question therefore is what OVO email can I use to send the photos of my Gas Meter which Ovo has asked me to supply? Thanks