Is there any precedent to have a purchase made with crystals refunded?

I had this happen when when the game was lagging really bad about a year ago.

I didn't get a FULL refund, but a partial refund at least made it less painful.

And the purchase was a character I was farming but had no real "need" for QUICKLY or anything so it just finished that farm a few days earlier.

I was still out crystals but at least it was a much smaller loss, more like if I'd paid for refreshes to get them.