We have Two Nest doorbells with two chimes and Google mini. The chimes stopped working, Called Hellotech. The tech came wasted three hours and short circuited and fried our transformer for the chimes and possibly Doorbells and Chime connect. The tech said he could not do the job and someone from Hellotech will bring a new transformer and fix it. Called their 844 number for support, it goes to someone in Philippines with children running in back ground. She could do nothing. No manager to escalate and no phone number for additional help.
Their experts are clueless duffers and Hellotech has zero real support or customer service. Avoid them at all cost.