Which help desk software do you use to provie support ?
or Do you use WHMCS or Blesta inbuilt system ?
This question has been discussed many times previously, check these posts :-
http://www.hostingdiscussion.com/cu...es/38475-preferred-ticket-support-system.html
http://www.hostingdiscussion.com/billing-accounting/44612-what-should-i-use.html