I worked with SMS for about a year, at the HP sect...

I worked with SMS for about a year, at the HP section, my job was a laptop technician, the training was 2 weeks and it's enough to have an idea how to work, but the problem was the new models that it may need different training to reach good results, I was doing the job of the level III duties when my pay was lower than level II, and they promised me to raise my pay since the first month because of my skills, but they didn't till my leave, hiring process is totally not fair, they hired a lot of techs. that I trained them, before me, and I still don't understand how they were thinking, however, when they felt I wanna leave, the hired me finally with same pay rate after a year, my advice for all techs. is gaining experience in this place however the pressure of work is too high, and they can find a better job some where else later.