Inshore open box purchase issue

SS007

Hi This afternoon I purchased a open box PSU the item is marked Complete I also opened ask the person at register to open it all looked like new he repacked the stuff but when I came home I noticed the power cable is missing I am not sure if he missed to repack the power cable or if its missing from the beginning either way its not there in the box I saw that micro center doesn't share phone no to call and check I live quiet far is there a way to contact them if they have cable issues just want to go on leisure next week and collect it else want to return the product

This is at Westmont IL