No no no ,cutting them off isn’t satisfying at all .Stringing them along is by far the best route ,prevents others getting the call within that time .The old phone contract call is always a good one .Hi my names David ,f**k is it but carry on .They are reading from a script and no matter what your answers are they persevere lol .Call them what you like they will still carry on unless you hang up .Sport in our house .
The only way they can get access to your system is by you consenting to them using the remote access feature which you have to manually set up .