Overcharged/scammed by Total store?

Signed a family member up for the new Total 5G Max BYO plan. Since I’ve got a Total store basically across the street from where I live, I thought I’d just do it there.

Unfortunately the person working there only spoke broken English and tried to explain that the first month was $30 instead of $25 which I was completely fine with but then looking at my receipt later they charged me $61 so I’m guessing there was some sort of convenience fee involved that the employee either failed to mention or did mention without me understanding his broken English.

Is that standard practice or should I contact support about it?