Simply return to the browser you sent the message in to check and respond.
This has happened to me.
Also no response from the buyer who has been refunded.
The response was worse then before.
Besides, I think that its business model it is not an open market the way Freelancer is.
For the rest of the world, know this: ANYTHING you want done on fiverr is FREE.
I asked the seller to refund one of the gigs, he would not even answer my text.
I should have about 400 clips up by the end of the month, I intend on getting 600 by June.