Ash did try calling from an untraceable phone to see who answered but didn't get anywhere, someone answered but Ash couldn't understand him.
I have no intention of ringing from my home phone, I doubt if they would desist if I asked politely. They would just know I had a live phone.
On a totally different but similar topic, never send a text message STOP when prompted to do so when receiving advertising texts unless you know the text is from a reliable company. The spammers then know it is a live number and sell on your details.
Yes, running a bit late today, but I am still in my Jim jams, dedication to duty!