New earbuds squealing for other callers

Posted this on Tech board but didn’t get any responses. Thought I’d try here.





Just got these earlier this week. No issues the first two days but every time I’ve been on a call today, the other person complains about my phone squealing. I’ve tried restarting my iPhone, forgetting the Bluetooth device then reconnecting. Still having the issue. Anything I can do other than sending them back and getting a new pair?

There’s no issues for me, just the other person on the call.