Please STOP using Excel for managing your customer data.
Excel has its place, but that place is not being a surrogate database!
Last week we took on a new client in Cronulla (a small community based sporting club) who had been managing their attendances with spreadsheets. The poor girl whose job it is to work out who's coming and who isn't was struggling big time.
We were able to take that data and import it into our Arnold Gym Management System, and now her workload has been trimmed by over 90%!