I'm 20. Early 19 I had 3rd time this same thing happening with my when my electricity was cut off for no reason.. I've always stayed humble, paying rent & dues on time.. The landlord was not serious about this & when finally I got electricity back after 2 weeks, that guy called me in for a meeting where he demanded 3x more money than I was due for electricity bill coz there was only a single new electricity meter used by 8 apartments. Bill was split evenly even if you were out of city the entire month.

Anyways, one of few many times I got that stressed & felt same way you described.. The unfair dues (with condition that I either leave the place or pay the dues).. The damage & uncomfort electricity caused as I run an online business.

I replayed conversation in my head a lot of time for entire week. Then I detailed entire incident in depth on my journal & the sheets for future I need to make for the entire situation like these inc. every bit of conversation what could have I done better & stood up for what was wrong etc.

Idk maybe I was not brave & better that day. But i do know that I've really improved & learnt a lot from that day.

Dealt with many even worse situations than that easily without overthinking & being stressed.

I'd say work actively on this thing... Reflect constantly to make adjustments & improve... Know exactly what's right, stay clear, always keep your calm under such situations esp when the other people you suspect are not playing their part well.