Unhappy Cant Make Calls On ME7

Hey so i recently found this thread that taught you how to sim unlock your phone, and i did it (not knowing that the i545 is already sim unlocked) and now i cant place calls on my custom or stock roms. If any one can figure out a way to either reverse the process, or figure out a way to help me get service that would be great.

p.s.: i can get 4g and data fine its just calls i can neither receive or send
Phone: Galaxy S3
Android Version: 4.4.2
Recovery: Philz Touch CWM
Current ROM: Liquid Smooth 3.0
Kernel: KT747
Baseband: ML1