A certified public accountant and a developer are making their final pitches this week to voters as they campaign for Hall County tax commissioner.Republicans Darla Eden and Kent Henderson are survivors in what was a four-way July 31 race for the office. Tuesday’s runoff winner will claim the office, as there is no Democratic opposition in the fall.And the candidates are trading barbs down the homestretch.“My opponent calls (the tax commissioner’s office) just a collections department and it’s not just (that),” said Eden, a CPA and former finance director and auditor for Hall County. “It’s a big-time money and human resource management office.