check dnc list is set before calling db.add_dnc
check dnc list is set before calling db.add_dnc

romonzaman/newfies-dialer,romonzaman/newfies-dialer,Star2Billing/newfies-dialer,newfies-dialer/newfies-dialer,saydulk/newfies-dialer,Star2Billing/newfies-dialer,Star2Billing/newfies-dialer,Star2Billing/newfies-dialer,newfies-dialer/newfies-dialer,romonzaman/newfies-dialer,romonzaman/newfies-dialer,saydulk/newfies-dialer,newfies-dialer/newfies-dialer,saydulk/newfies-dialer,newfies-dialer/newfies-dialer,saydulk/newfies-dialer