Fiverr customer service officers do not support sellers in any ways at all! Never waste your time and degrade yourself as a seller there. They believe the buyer without concerning themselves with the actual truth. Please think thrice if you are planning to sell your service there.
Buyer can walk away with the free copy of your work when the order is cancelled which is exactly what happened to me. Buyers can ask for extra work or change to a brand new piece of work without paying extra fees, and when you refuse, the buyer either leaves a bad review or request the resolution Centre to cancel the order, quoting that you are not qualified to do his work and the officer will just go ahead and cancel the order on his behalf.