The software versions that I'm running are as follows:
TNG - v1.0.7.0
TNG Callbarring - v1.0.1.2
DTXEricssonBP - v1.0.0.2
Refer to forum post for latest version and software:
How do I install TNG with Ericsson BP250 call barring?
I updated the TNG Callbarring and Ericsson barring services but Barring still did not take place.
I then restarted the TNG host PC, thereafter I made a call that reached my budget and it was barred.