My Master & Dynamic MH40 Wireless Gen2 headphones have developed a fault that casues a notification sound to play every few seconds, interrupting playback. I contacted their support who were initially helpful until I sent them my original proof of purchase showing them being out of their (short) warranty. They told me it’s likely a driver or battery issue and they do not make any spare parts available. These shouldn’t be thrown away after 2.5 years.
In retrospect I suppose the clues were there for this company - charging $29 for 3.5mm audio cable.
Obviously I will never buy one of their products again no matter how good they sound. I wonder if people know of manufacturers who do provide spare parts and are on the right side in terms of right to repair?
By any chance do you have a samsung phone? I had the same issue with any bt device, i had to mute notification settings and it went away. Later i discovered it was an app causing the issues with Nice Catch. Or it might be that your headphone just faulty.