Promotional data complaints

Hi, on the 23/11/2018 I bought a new contract cell phone and was assisted by Bradley who was very helpful, when I phone the activation department to move migrate the contract to my old number, they took the promotional 30GB that was supposed to expire on the 23december. I have logged the call with them but they are not helping in fact they closed the call, I want my data back as it is the only reason that a attracted me to buy this phone. They are giving me the runaround. Patrick is the guy that assisted me with activation.

Call me on ********** 203