Nothing I can think of.
Nothing.
Nothing!
Provide the 10% referral discount without me calling in.
Perhaps provide a follow up call to verify if the treatment worked.
As far as I can see right now no improvement is needed.
There was a bit of lack of communication between the person who took my booking and the onsite tech, leading to the tech not arriving with a ladder and needing to use mine. Had I not been at home (the booking rep said I didn't need to be there), the work may not have been able to be completed, or at least not to the same quality.