They are persistent little buggers aren't they... as long as they think there is any chance you are going to pay them, as long as you keep answering them, they'll keep trying. Thankfully in your case that tactic wasn't going to succeed
They usually get mad or act very offended when you call them out for what they are. Of course, it's all part of the act. For some it doesn't matter how much evidence you throw at them, they'll come up with excuses, intimidate you, or try to divert your attention with all the money you're going to receive.
Maybe you can understand the reasons that some people actually sell off their entire lives to pay these scumbags, for whatever reasons they invent.
Thinking of buying gadgets on the internet? Read here
first. And there is no such thing as cheap stuff from China, at least when it comes to famous brand names. Read here
"FABRICATI DIEM, PVNC"