I still have bouts of pent up aggression about similar things, but if ppl are disrespectful to me now, they f*****g well know about it. I've worked damn hard to get over the constant abuse I had up to 19, by various people, and I'm simply not taking that s**t anymore. You shouldn't let ppl grind you down, and I learnt that after nearly 20 years, but it's never too late to start.
Chin up, Ana54. Take no crap and you will be ok. It will happen whether you worry about it or not (the ppl being rude to you, it happens in the world and will always), so don't take it. Makes you feel so much better. 
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We are the mutant race!! !! Don't look at my eyes, don't look at my face...