Dying hair...😳

So today I decided I wanted to get my hair highlighted, I went to Walmart and went to smart style which is in Walmart. I didn't feel comfortable with the guy doing my hair he didn't seem like he knew what he was doing so I went with it I had hope for him.. Well my mistake he did a real shity fucking job (excuse my French). Some went some where else to get my hair fixed she wants to do it in two parts. One dye my hair one color and a few days later actually highlight my hair. Am I okay or should I just leave it? I died my hair a lot before I was pregnant..