At my work, customers always ask for a discount if ANYTHING goes wrong. They used to pull our tickets/commsissions as well if we made a mistake until we threatened lawyers on them.
Customer Service almost always capitulates due to the "customer never wrong" mantra. (which is bullshit btw). They have to categorize returns and if they use one of the generic codes too much they get written up as well.
In the modern retail world it is now S.O.P to offer discounts for any kind of mistake/accident, remember it's all about Cutomer Loyalty. (unless your Dick's Sporting Goods I will never give them a $ ever!) some people will abuse the system, others let it slide like water off a duck's ass.
Recently I forgot to tip my new favorite massage therapist and even texted her after to apologize, I made up for it on our last appointment. She didn't say anything and I realized it 5 mins. after leaving her. Not a good impression for a 1st appt. on my part, but i did correct it.
Playing the devils advocate here, because it's a buyers market, if you don't treat me like a king, I'll find a girl/store who can.
Btw i have never ncns'd a provider, I'm nice like that.