The £20 Always On goodybag has not got unlimited data, giffgaff have not offered unlimited data since September 2015.
The goodybag has 9gb of data once that has been used the speed drops down to 384 kbps.
However between midnight and 07.59hrs it reverts to full 4g speed.
When i got the 20 pound goodybag i am sure it say unlimted data as well ?
giffgaff haven't had unlimited data since 2015