No Means No

How many times does a person have to be told "no" before they understand? I lost 30 minutes of my day repeatedly telling this lady that:

• no, we would not be able to get someone out to connect her internet today or tomorrow
• no, we do not have a emergency process for internet installation
• no, you cannot pay extra to get somebody out there before your rescheduled appointment on Sunday
• no, I cannot talk to my manager to find out what she suggests (she's not even here today)

I know, I work in customer service, therefore my job is to serve the customer, and I do, to the best of my ability. However, that whole thing about "the customer is always right" is BS...just like everything in life, you can't always get what you want.