bluetooth erratic connection with iphone

I have a Tesla 3 Version 2022.44.25.3

Since couple of months I have bluetooth connectivity problems with my iphone 

While talking on the phone via bluetooth, phone connects and disconnects erratically

Have tried 3 different iphones, including a new one (iPhone 14 plus) but problem persists

Tesla Service is accessing/testing BT remotely and claims all is good

However it is not as until recently had no issues whatsoever

Have tried to disconnect/forget/reconnect phone and car but problem persists

On the other hand phone key works fine

Any suggestions will be greatly appreciated 

Thanks