This was Verizon calling to offer me a special promotion on increasing my Data speed for $10.00 more per month.
Person I spoke with was very friendly and a little apologetic.
(I used to have the higher speed but decided to downgrade to save some $$$ and honestly I do not see the difference between the faster speed and the slower speed because of all the bottle necks in the network).
FIFTEEN (15) calls on my mobile in 2 week time. NO messages left. I called back from a "hard-line" phone, a taped voice answered and said "good bye" and disconnected.
I'm getting calls almost every day from this number. I've never answered it and they never leave a message. The caller ID says it's Texas just like other comments. I tried calling back but was put on hold for a long time and gave up. Adding to my blocked list.