What happens after you press send.
Three steps, and the third is the reason this form asks about volume at all.
You get a ticket id
An automatic reply with a number on it. It is the only automatic message this address will ever send you.
A person reads it
Someone on the delivery team, within one business day, UK hours. If it needs an engineer you are told that rather than left waiting.
Volume questions get a number
If you asked what a send would cost, the reply contains the arithmetic. Not a link back to the pricing page.