I don’t see any green box containing a telephone number, can you be more precise please and I’ll try to help?
Thanks.
Presumably @blakelawless is referring to the thing that looks like a business card. This is not an iframe. Its something your theme calls “bottomads”. I would expect you to find its settings in theme options or in theme customisation somewhere. Keep looking methodically through settings. It could be hard-coded in the page template, though I think that’s unlikely.
It looks like you are using a custom non-wordpress.org theme so its not something this forum’s members have access to, and therefore its unlikely anyone here can pinpoint where the bottomads settings are. You should ask for support from the theme vendor. Their support guys know their theme best.
http://wp-web.com/
Charges may apply.
Its possible to change the number with some custom css. This is not good practice, but if all else fails… Check other screen resolutions and browsers to ensure it works in all cases.
.bottomads strong:nth-child(6) {
visibility:hidden
}
.bottomads strong:nth-child(6):before {
content:"01234 56789";
padding-left:80px;
visibility:visible
}
If your theme does not have a setting where you can enter custom css, you can use a plugin like this one:
https://wordpress.org/plugins/simple-custom-css/