Phone the Google Nest UK support number 0808 169 2307 for support with your device. Lines to the Google Nest support number are open between 8am and 7pm Monday to Friday and 9-5 at the Weekend.
When you phone the Google Nest support team you will need to tell them the make and serial number of your product as well as giving a bried description of the issue. Customers can phone this number for support regarding thermostat issues, and issues with the Nest Heatlink SHS. You can also phone the Google Nest support line if your Nest has completely stopped working, a technical support officer will be able to go through some troubleshooting procedures, before organising an engineer if the issue is still not resolved.