Never send more than one follow up letter however, as if the company hasn't bothered responding then you are most definitely not in contention for the position any longer. (copymyresume.com)
A discrepancy between what you reported and what the employer says could knock you out of contention for the position. (thebalance.com)
It can be a distraction, reflect poorly on your candidacy for the job, or eliminate you from contention for the position. (themotivatedjobsearch.com)