BoostMyScore guarantees that the tradeline(s) you lease from us will appear on at least one of your three credit reports in less than 60 days from the First Estimated Monthly Reporting Date for each card you are added to as an Authorized User. If the Card does not appear within this time frame, BoostMyScore will – within 14 calendar days – provide you with a full refund of the money you paid for the card you purchased.