I get what I ask for.
You can make up the weakest reason for getting a discount, something free or something extra (“it’s discount day”, “it’s Tuesday”, “you love giving discounts” - any old rubbish will do) and chances are you will get something.
I often push it, just for my own amusement.
In shops, for instance.
Me: How about a discount? Assistant:What for? Me: Well, discounts are nice, aren’t they? They make both of us feel warm and snuggly, don’t they? Assistant: Oh, ok then but don’t tell my boss, ok?
Rinse and repeat. 