I am new to Fiverr but not new to graphic design industry (5+ years experience with 400+ clients). The above lines that I've quoted from your message is what exactly happened with me on my very first order here on Fiverr. In short, the buyer purchased my premium gig, I delivered first round of logo design options. Buyer didn't like them. And that's fine. It's very common in logo design and I'm very used to comfortable with it. So I asked the buyer what revision would he(or she) want. But buyer just said, he didn't like them. So I went ahead and created more logo options. And believe me, when I say I've worked with numerous clients, I know that what they will like on the revision. But again the buyer simply says "I don't like them." How can one help a client if he's not willing to give constructive feedback ? But yet, I tried again and offered to give more options requesting to give some idea and direction for revision or new options. but to my surprise, buyer simply went to dispute and requested for refund without giving any concrete reason. I was left with no option to but accept it as didn't see anything happening from the buyer side. So order got cancelled... my very first order, buyer got refund and I got negative ratings ! I reached out to Fiverr explaining things and requesting if this will hurt my ratings and they said yes it will hurt my ratings.
So it was more like the same experience. Buyer simply opened dispute, got his money back and Fiverr didn't even ask me about what was wrong !
But I would say that it happens. I'm still high in spirit as I gave my best, so repentance at my end. I'm very optimistic and soon, you'll see my profile buzzing with new orders and great reviews. Not all buyers are same. 😘
You're quite experienced than me here on Fiverr, so I wouldn't comment further, but wish you just all the best on getting your account back and sorting things out.