Was I wrong to call the manager of the store

I went into our local grocer, to buy some milk and bread, There was a sign right below the bread that said 1.00 I picked up that bread (not reading description,due to it covering regular price on said bread) I got to the check out for the at which that time the cashier informed me that, the bread I picked up was not the one on sale. I told her it was no problem that I would pick up the correct bread, but that they need to move the sign at which time she replied rudely"I will give it to you this time, but next time I will not. I told her no that it was not a problem. I went back and picked up the right bread, and informed her that I was tired of coming in and products being mislabeled. this is the 5th time this month alone. and most of the time they Do NOT honor the label price. she rudely said yet again I was going to give it to you. that is when I told her that when she said that she was rude and hateful about it and that is why I was upset this time. when I got home I did call and let manager know about the problem, as well as apologizing to the store manager about my getting rude right back!!!!! Was I wrong to inform him on the situation.