Mobile services

[kstar]

I mixed up my phones and thought I was being asked for my sim pin not an network unlock code, now my phone says network permanently locked SIM ME lock. I've spent 3 hours on the phone and half hour in store, was told I had to factory reset phone an lose all apps have to start again etc, gave in after 2 weeks an did it but NOTHING HAS CHANGED! No call centre or store people have a answer please help.