Given Tina's limited experience and education, her hourly rate is estimated to be on the lower side. In Zambia, entry-level marketing professionals can start around $20-$30 per hour. Considering her role as a customer service representative, her rate might be slightly higher, but still within the lower range of $25-$40 per hour. Without more specific information about her skills, industry demand, or location premium, this estimate is conservative and based on general salary benchmarks for marketing professionals in Zambia.