Big O Tires, Cedar City, Utah Brendon Larson did the transaction Charged me for items I did not agree to buy, did not ask me if I wanted them Cedar City, Utah

They gave me a price for the trailer tires which I felt was high $251.18 total and they asked me if that was OK.  I asked if they had anything cheaper they said no.  I stated then i am stuck with it because I am from out of town and have to have the tires.  I was six hours from my home to move my granddaughter back to my town and found my trailer tires were wore out.
After I got home I read the invoice. 
They filled my ATV trailer tires with Nitrogen for $19.98. They did not ask me if I wanted nitrogen in my ATV trailer tires which I don't.  They charged me $23.40 for a Tire Protection Plan.  The nearest Big O store to where I live is over an hour away. No one in my little town honors a tire warranty plan.  I do not want a Warranty Plan and they did not ask me just charged me.
They ripped me off $43.38 which when you are retired is a big deal.