That always don't really help anything at all. It only removes you for as long as 1 week. My friend did it and she kept getting the calls after 1 or 2 weeks as even that long. Just go to your local phone company and ask them to block this call from them calling you back.
Just got a call from them today at 356pm central time on my cell phone. Missed call cause I was away from my phone, but seems its a good thing I did.Never talked to any person prior to this call for any credit cards and the alike....and don't care to. Another spam caller to add to my "ignore" contact list.