I have had my level 2 account downgraded recently because of a refund to the customers multi order. I refunded because the customer was requesting a bit to much revisions AND making changes as the revision were made (my gig was clear against this).
My advice to sellers…
If you have received a 'multi order" at once,…lets say one customer places 8 orders from one gig… DO NOT BY ANY MEANS cancel or refund the multi order…Fiverr will see it as a high ratio of cancellations and your level will be downgraded. Finish the job by any means, as it is better to put up with the customers
than to not finish the job and receive a beautiful downgrade!