Cable Box in my living room

I'm trying to get better picture quality on the nex cable box that was installed yesterday.  I called yesterday when the problem started yesterday after the technician left yesterday.  The person that I talked to tried to fix the problem but couldn't the said he had sent a message to he department that could fix the problem.  Said they would call me back that never happened.  I called this morning and whoever I talked to tried to fix the porblem and then said someone from the other department would call me back in approx 40 minutes no one called me back after 1 1/2 hous.  I tried to call again and was put on ho.d for more thatn 1 hour and no answer.  So my question is when will have my good picture quality restored?