Speak to the gifter first and explain the situation. Either he/she will buy you the full DLC pack to fulfil the giveaway, or he/she won't, and you will have no choice but to mark it as "not received".
I'd certainly talk to the gifter, and give him/her a chance to make things right before involving Support.
Good luck :)
Comment has been collapsed.
29 Comments - Last post 7 minutes ago by Mhol1071
71 Comments - Last post 2 hours ago by clubededAxis
25 Comments - Last post 3 hours ago by Delisper
17 Comments - Last post 5 hours ago by Mayanaise
250 Comments - Last post 5 hours ago by RobbyRatpoison
16,679 Comments - Last post 6 hours ago by PoeticKatana
1,179 Comments - Last post 7 hours ago by ekees
28 Comments - Last post 5 minutes ago by Carlo
29 Comments - Last post 5 minutes ago by DeliberateTaco
54 Comments - Last post 18 minutes ago by Axelflox
63 Comments - Last post 23 minutes ago by Lakraj1209
147 Comments - Last post 31 minutes ago by MayoSlice
8 Comments - Last post 1 hour ago by insideAfireball
545 Comments - Last post 3 hours ago by Ninglor03
Comment has been collapsed.