Too late to take it back

Anyways it has all 7 days and above each day iit has 2,4,6,8,10,12 twice, one set is shaded the other isnt.
Then it has the 96 pins around the whole thing, and they really do not match up to the numbers. The instuctions say twist until you have it on your day and time, then set the pins, thats it. Never tells you how much time the pins mean, or how to tell which pin is for what time of the day specifically.