RMA Issue

Hey guys, recently I got approved for an RMA for some fans that were making a high pitched (squeal?) noise, not sure how to describe it. It only happened during color shifts or dark colors/low brightness. I attached the serial numbers and receipt for the 5 fans, got approved and sent it in, and today only got 1 fan back. Talking to that chat bot was a nightmare, and now I’m wondering if I didn’t make it clear enough it was for multiple. I mean…. I attached 5 pics of 5 serial numbers on 5 boxes lol. Anyways, those fans were pretty expensive so I immediately wrote back to support, but just wondering has anybody else ever been through something similar? Are my other 4 fans gone now? I understand they’re busy, but giving back 1 fan when you received 5 didnt ring any alarms?