as a service business, the owner get the money can "being not in a good mood " and "sounded irritated", why don't u think the customer who paying the money, is having bad mood also to get the lousy service/product from your team?
customers went there for relax, if your service and product is good, do u think they will stay awake and call u at 2am?
copied from the owner explanation:
She started calling me between 12pm- 2am, being not in a good mood to be receiving call in the middle of the night I sounded irritated. I asked her to email me the next morning.