'I am, in fact, a customer': University student calls out their professor for providing "bad service" after receiving an unfair grade

While it's probably a controversial take, the argument stands with strong reason: If you're a landlord or a professor or in any other position where someone is paying you for something you're providing them… you're providing a service, and the person paying you is entitled to good service. Far too many of these "service providers" not only regard this as unnecessary but also regard themselves as above the person paying them and use this to placate their nagging conscience. Who hasn't had a landlord who refuses to acknowledge their obligations? Or a professor on tenure who is only reluctantly teaching the class because they're being forced to by the university?

Still, it's important to also acknowledge that this line of argument could lead to a lot of entitlement from students who feel that they're being wronged when they're not really being wronged. Anyways, this was the topic of conversation in this online discussion, and commenters couldn't have been more divided on the issue.