A bit amused by all these expectations of "free service" thrown in, when they have bought into a premium brand.
There is a reason why Nikon is a premium camera brand.
Premium products are never "personal". In a sense, they are as snobbish as you yourself aspire to be when you get the product.
The amount you pay for the product is not the point. The point is that there are clearly stated and defined tiers, or guidelines, of what can and cannot be done. Example: NPS/CPS vs non-professional owners.
Else how do you decide? >$500 servicing fee then got free cleaning? Repair > 2 bodies then got free cleaning? With premium brands, the experience is never of "freebies", but of consistency. Consider Apple. Consider Lexus.
Not putting down these brands but maybe Pentax, Olympus or (maybe) Sony will offer such services for you. Did you consider what this means? It only means that as smaller companies, they have no proper guidelines in place, and so depend on "friendships" and "relationships" (e.g. if I know you well, or if I appreciate you for spending so much $, then I will give you free sensor cleanings.)
It's about the brand experience. If you want service based on "friendships", then maybe you bought into the wrong system.