Hey @Loperoni, thanks for posting!
Sorry to hear about this issue with your headset. To provide you with the most accurate support, could you please confirm which headset you have?
Additionally, if you have been through any troubleshooting, could you let us know which steps.
Thanks for clarifying @Loperoni.
Are your SoundSport Free headphones not charging in the case? What I'd recommend trying is a reset as shown HERE first of all.
I'd also try using a different cable for charging your headphones, to see if you notice a response from the right bud. Let me know what happens!