I am on the 2.0 plan and have the same issue. About 10 calls per day. I know any illegitimate call when it says “incoming call via cell,” while connected to Wifi. The companies calling are not concerned with do not call lists, I have registered both, my number and the shadow, in my case Sprint, number If you ask what company is calling they will hangup on you. In my opinion, this is one of the reasons for the new “No class action lawsuit clause” in the terms of service. With 3.0 plans, this is much more complex problem; with BYOD, the software required is far removed from the underlying hardware and MAY(I do not have one of these devices) not have access to the source of the call.
I “almost” feel bad for the technicians that I sent to Wrigley Field to install my free alarm system. After the third time, I bet the company stopped using the telemarketing service for leads.
Getting the number changed does not help with telemarketers… My wife and daughter receive the same calls within minutes of mine.(Both are also on the Do Not Call Registry for both numbers)