I had the HyperScroll functionality break on my new Basilisk V3 mouse, so I sent it back to Razer who said they would replace it. Fast forward a few weeks and they tried to send me a replacement but got the delivery address wrong (they forgot to include my apartment number so FedEx have not been able to deliver it).
This occurred last Thursday (March 16th). It is now a week later, and I have sent them multiple emails throughout the past week asking them to please correct the issue (since FedEx say that I cannot change the address on my end). I have not had a single response back from anyone at Razer. To anyone who works for Razer, could you please read your support emails? It's insane that your customers have to try and find help on a public forum.