djajay80 Posted November 7, 2015 Share Posted November 7, 2015 We want to use Promotional code as a "Refer-a-Friend" $5 a month off for 12 months. When added to an existing customer that currently pays $35, its changes the invoice to 40, then adds a 2nd line and deletes $5. putting the invoice back to 35. Whats wrong? 0 Quote Link to comment Share on other sites More sharing options...
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