Refund is definetly due. I reliced 7 my QGJ to give him more offense. I don't want these relic levels anymore and I also don't want that Omicron anymore. The alternative is to go via google support and request a refund due to false advertisement. The offense fix is not false advertisement, but before I put the omicron on I checked the mechanics to make sure QGJ's damage push works in GL comps.
The sole reason I put the omicron and relics on is to make a 3rd strong GL defense team that is quite technical to beat (QGJ lead JML). And that was clearly visible in the mechanics before.
I know you can't refund potential crystal spendings around that.
But own your own mistakes and refund QGJ back to r3 w/o omicron and Zeta.
Alternative is pretty clear - his kit not working to your intention is a product of your incompetence and I am not going to pay for that.