I also started calls on my cell a few days ago all day long (coincidentally, they started the same day I started my vacation with my husband and three young daughters.....yeah me!!!!) with no answer (when i answer or attempt to call back).      Yesterday I finally had enough while in Disney @ Magic Kingdom (near space mountain so it was very loud)  and called back numerous times in a row.....none connected but immediately after hanging up while attempting to be connected (maybe the 15th time I did it),  a female with a very heavy accent called me and said something about me being interested in buying or trying something (weight loss maybe?).
I told her I was not interested in whatever it was and to remove my number from their list and NEVER call again.    I have not received another since then (maybe 3 pm yesterday).

They have been calling me 5 or 6 times a day on my cell.

Got 14 calls from this number yesterday.  I will have to get my number changed if this continues. Something needs to be done by someone.  Started calling now every 15 min.

This number calls all day long and when I answer, NOTHING!!!! I hang up and they call back 3 or 4 times daily. They better quit calling. I am very frustrated with this #

I have received about 10 calls so far.....very annoying.  No one answers when I call the number back.