"I've been ordering from this restaurant for a long time, and the food is quite good. However, I recently had a frustrating experience when I tried to place an order. I waited on hold for 10 minutes, listening to background noise from the restaurant, only for someone to come back and tell me they'd call me later. Are you serious? I've been a loyal customer for 10 years! This is unacceptable, and you've now lost a customer who used to order from you every week."
