Been in this position more than once.
What I want: exactly what happened in my shopping cart and with zero contact. If the shopping cart made an "error" then seller eats the loss or the order is canceled.
I've never had it go down in email but I don't answer unknown calls. I've had sellers call with blocked numbers as though they were creeps, political surveys or telemarketers. Smooth move.
I only want to be notified in case of backorder or the shop's burned down with my package inside, etc.