lies about luggage allowances right on their website

lies about luggage allowances right on their website. it is by total chance i checked with the airlines, which gave me completely different weight, i could have lost 100 pounds not knowing the real allowance. it is not the first time i use a third party for my ticket, i guess it is the last one. i spent i don't know how much of my time to find out about my luggage allowances, with all of them, which is ridiculous in fact suspect enough, but with them they said and stipulate on website in general what the airlines allowed, whereas it was in fact half of it. complained about it, the staff sent me emails after emails like if they did not understand what i said, asking me all other kinds of other questions. i guess with a good lawyer, one ought to have a case, and punish them....but.