Answer:
The disgruntled customer is obstructing lawful business or occupation carried on by the owner of the land. The disgruntled cannot be stoping people who are tying to make a purchase and must leave. A LEO should use PC 602 is trespassing and the owner should be present to establish facts from the customer. I would talk to the customer and tell him that he needs to leave and cant do that and if he doesn't he can go to jail. If the person continues then i would then have to force him out.
Step-by-step explanation: