Okay, let’s tackle this. So Frank has 25 years of experience in customer service, which is a long time. However, the rate I've estimated is on the lower side due to the lack of information about his current role, industry, or specific skills. Typically, customer service professionals with his level of experience can earn around $25-$40 per hour. However, this rate is more on the lower end of the spectrum. Considering the location is Baltimore, Maryland, which is not a major hub for customer service jobs, the rate might be lower. Maybe around $10-$20 per hour. But since I have to provide an estimate, I’ll stick with $12 per hour.