Remember the good old days, when lying was considered unacceptable? The folks at Iron Tribe Fitness, a South Carolina gym, are holding Meta to that forgotten standard in a class action suit alleging that Facebook overcharged advertisers as much as $4 billion by using one type of auction bidding process while claiming to use another.  Meta blames the error on a “software glitch” that began in 2013 and continued for at least four years.