Third time in a row that I was short supp****

This is the third time that I have bought the 8 or 10 piece Family Treat at this particular branch and when I got home there was either only 6 or 7 pieces of chicken in the container.<br> The first time I let it go because I figured mistakes happen.<br> The second time, 2 weeks ago, I called them about this second instance and was told the manager would call me back...I am still waiting on his call.<br> Then this evening - again chicken short in my order.<br> Can the staff at this branch not count or are they doing it on purpose because I have previously complained about their absolutely atrocious service?