shopify_dev07

I'm relatively new on Fiverr platform, yesterday I suddenly got a notification from Fiverr that I have a new order from someone I did not know or communicate to. I got some requirements in the order page. I was shocked because I did not know this feature of Fiverr. And after some hours, I got another auto order that I had to do. Is there any way that we can stop auto orders? so that clients always communicate before placing an order.

Update: The client has sent order cancellation request via Resolution Center.

I'm new on Fiverr with 11 orders completed with 5.0 rating. But I got a client who gave me 6 points of requirements for the order in 2 days time. I did everything within 2 days and deliver my order in time. Next day I got notification that order is in revision, buyer gave me new changes, I did those changes too, but after that he is coming up with new changes again saying that I'll accept order only if you complete this (Buyer has also published my work). I don't know what to do, should I talk to Customer support or something else? Please guide.