nego nego and jokers

i have deal more than 1 and a half year. there bunch of people keep nego nego , i put price of my selling products ngam ngam, and yet people still nego nego on call and come nego nego . even when i give abit discount , they will say " aiya , kurang lagi laa " to be honest i feel very pissed and very dissapointed , i tahan only. there bunch of kids , (from their voice on call) these day people more over the top , on phone nego , and even after ask discount , they tell me other selle (online seller) sell just this price. u shouldnt fucking tell me , i dont want to fucking know what price they sell , i expect this item to sell at my price sorry , i have no patient already , i tell ok , go ahead , u pi cari dia ............no more mr nice guy. these wannabe buyer are smarts , i have met before , why the hell they find me? they are alot of people scared to buy online and scared courier damaged , so they want to see first , i alot of time i put order only nobody wants , these day people want see item only can pay cash. they tell me the online seller sell this cheap , but they didnt tell they have to pay courier fee . that easily rm10 one postage direction., then wat about postage send to claim warranty and send back from claim warranty? that already rm10 x 3 directions i want to tell , if anyone agree my price , then u only come , otherwise dont waste time , if u dont agree price dont come dont call me la , more worst is those time waster sms and email to me............. i m train muay thai and weight lifting , due to the prank calls , i keep parang here too