I inquiry about the condition of the camera, I wanted to buy, response was super slow, took hours, in fact a full business day

I inquiry about the condition of the camera, I wanted to buy, response was super slow, took hours, in fact a full business day. Then they promised me, after payment, delivery within 3 days. X2 days after payment, they send me an email where I must verify the Adress with PayPal. Camera not dispatched yet. Why not say that beforehand or on day of payment. I cannot recommend this online shop. Really super unprofessional.