Geofencing problem

I am the v3 app which I paid for . Taco is consistently saying I am away and so no heating until I overuse it . Does not pick up my location . Have checked all the phone settings and emailed tado who have sent it to their technical department . No they are
Not even answering my emails . Am very dissaponted with them and am considering moving to another system. They have also refused to refund my money for the new system as well even though in my view it does not work . Never had any problems with the old one and wish I had never changed .
Any ideas before I move on