We had been registered with TPS for years and still got calls, we did report them to TPS, but it seems they can do very little about them, also, TPS can to nothing about calls from abroad as there is no power for them to prosecute.
Caller display is good, but it still rings and disturbs you, with these B.T phones it does not even ring If it is a nuisance call, it goes straight to voice mail, at this point the nuisance caller ringers off, so, you never even hear it.