Mitch BogenMen's Colorful Dress Socks - Fun Patterned Funky Crew Socks For Men - 12 Pack

I received my order today & it contained 8 pairs of instead of the 12 pairs it says in the description. How do I get the other 4 pairs of socks?

Do these come to Either mid calf or the knee?

Is the spandex tight fitting around the leg?

Would the Seller sell 6 socks [size10-13] and 6 socks[size 13-15] as a 12 pack of one design? If so, what is the price?