The language barrier and the different time zones are what caused this misunderstanding. Although it is very clever from the seller to ask for a confirmation of the address, in such cases it would be even better to sign the address.
I think Loyce was asking why the BTC in question still hasn't appeared at that address when OP stated that the transaction has now been made.
i taught the is good idea so i always copy paste my wallet address over & over again whenever i want to receive coin but, i never got any means to confirm if, this actually work since, i never had such an attack.
I don't see why that would make any difference. Clipboard malware detects that what you have copied to the clipboard was a bitcoin address, and alters it so when you paste a different address is pasted. I don't see why copying and pasting several times would change that behavior, as every time you copy your real address, it will be changed to the attacker's address before you paste it. The only way to be 100% safe is to double and triple check the entire address you have pasted (not just a couple of characters at the start or end) with what is displayed in your wallet.