Direct TV offered me 2 gift cards for $100.00 each, but now they say I am sorry. You will only get

I called Direct TV to get information on TV service and get their service on 12/01/2016.  A lady name Claudia answered and helped me to begin my service with Direct TV.  She promised that Direct TV will send me two gift cards for $100.00 each, total of $200.00 for choosing Direct TV, to wait 6 to 8 weeks.  I recorded the conversation.  She recapped the services and terms, and her supervisor repeated all the terms as well.  I have an audio file in Spanish.  I called Direct TV today 01/12/2017 to ask status of gift cards.  The person who answered his name is Dennis, he said sorry that I will only get $100.00 gift card.  I told him that this is not right, it is not what they promised.  I asked him to speak with his supervisor, and he put me on hold for 36 minutes.  I got tired of waiting and hang up.  I can send you the recording by email for your to listen.  Please help.