if ( $last_bill ) { # if not, there are no discounts possible
my %plans = $last_bill->discount_plans;
@discount_term = sort { $a <=> $b } keys %plans;
if ( $last_bill ) { # if not, there are no discounts possible
my %plans = $last_bill->discount_plans;
@discount_term = sort { $a <=> $b } keys %plans;