NNN tenants keep asking for interior repairs!

[Amy A.]

One of the great things about NNN investments is that the tenants do all their own maintenance within their units (or so I thought). I've been managing a strip mall for almost 2 years and the tenants keep asking me to fix or replace their lights, heaters, toilets, ceiling tiles, etc. I remind them that Section 11 of their lease states that my responsibility is for the structure and theirs is for everything inside. They aren't happy. Previous management fixed and replaced things for them. Does this happen to anybody else? Am I misunderstanding my duties? I've been going above and beyond with maintenance and repairs of the outside, but they don't all seem to appreciate it.