free line and gift card

Greetings. 
I am disappointed with NOW mobile. I was promised a free line with service and also a gift card I was told was "in the mail" I have received neither. The gift card was supposed to have been for transferring out of my prior mobile phone. I spoke with an agent who gave me a ticket number and said someone would be contacting me via email and still haven't heard anything over 30 days later. You have to go through so much just to get to someone I really feel disappointed unsatisfied jipped and cheated. Who do escalate this issue to