How do I make a Complaint

How do I get someone to help when Ring keep breaking there promises, 2 months I’ve been awaiting a replacement sola panel for my fathers Ring 2 doorbell, he is bed ridden and has carers call 4 times a day who obviously use the doorbell. I have contacted Ring on 5 separate occasions culminating with today trying to make an official complaint and have been waiting since 10am (gmt ) this morning for a supervisor to call me back. Does anyone know how to take this further. Thank you