I have the Drayton Wiser system to control my gas radiator system . Have upgraded it to include electronic TRVs on all my radiators which keeps the house warm but more importantly keeps my energy bills low.
When ever i have any issues i email or ring Drayton for support. On each occasion i have received first class service and always had my issues resolved. Always speaking to a real person and no BOTs.
I only wish all companies gave such a good service. Thanks Drayton.