I am so sorry to hear about your frustration. I am having trouble getting by the rudeness of that "guy."
I would like to lose 30, healthy weight guidelines more like 50, but I have lost the same 10 pounds over and over again. The next ten, once in recent times...and the last 10-30 I have been carrying around for about 25 years. I try, I diet record, measure, weigh, join gyms pay trainers.... Even though I am not the success I hoped to be; I keep trying because I know I am healthier for the effort. You are healthier too! There are also so many inspiring people on this site who HAVE lost the weight. Keep up the good fight.