Exact same just happened to me. Advertised on Kijiji (engagement and wedding rings). 7206630293 number. He offered $5500 when I was only selling for $3999. I was suspicious and typed that number into Google. Discovered the scam related to that number.
HAHAHAH he wanted me to ship my new iPad to his wife in West Africa.. Asked him for his name and he said ''John Smart'', and then I've asked for his ''Wife's'' Full name and shipping address and he said ''WILLIAM'' lol what a scammer.. Now I keep on harrassing him and will keep on doing that FOR A WHILE LMAOO