Odd Smart Meter mailing?

I got an email from Bulb at 5:30pm yesterday saying “we’re installing Smart Meters in your area. Click to book an appointment.”. Clicked the link this morning which takes me to my Bulb account where it says “No appointments are available, we’ll email you again when they are”. Seriously? All available appointments taken overnight? I’ve obviously emailed Bulb and await a reply. Anyone else experienced this?