Newbie rider taken advantage of

Just got into cycling and went to Cajees to buy an entry-level helmet. The salesman successfully sold me an helmet for R1200. I took it home, fiddled around a bit and decided that it didn't really fit right. So I returned the next day to exchange it for another (cheaper) helmet and get a refund for the difference. The sales assistant kept on pushing an even more expensive helmet, even though I had found something suitable for around R800. <br> As I am about to pay, another assistant tells the guy helping me, oblivious to the fact that I'm standing right there,\If you're clever