There are two CNA training programs currently active in Monks Corner, SC. You can see the active programs in this document. If you believe it was one of these, then you may contact them to see if they have a record of your enrollment. If you finished training a long time ago and your program is not of these two, then you might want to contact Prometric at 800-475-8290. You had to provide the name of the school you attended when you submitted your application for testing and they probably still have a copy of your application.