I do not know if this is normal.
But lately, i find that there are a lot of ppl dealing with 2nd hand lens/cameras/flashes/etc but they do not like to answer the phone calls.
They can say that they are busy but reply very fast?
Or if not, they simply do not answer even if you are waiting for them to deal at the allocated place, everything i simply by sms.

What has the world become to? Omg.

There is just pure craze. LOL.