Menards review: Customer service

I was at the Menards on 2015 Walmart Dr, Warren OH 44483. I was met with a rude customer service representative Bethany an older woman with blond highlights. I came in about a return or exchange on behalf of a stake light I had purchased from them but lost the box and receipt for it. She said she couldn't find the SKU and implied I did not purchase from there and that I was mistaken. I went to where I had bought the light from in the light area and found where it was sold, the SKU and sale price. She was too lazy to do her job and she just wanted me gone and out of the store so she wouldn't deal with me. When I went back to the customer service desk with the SKU information she came up to me and said "There is nothing I can do for you." When I told her I found the SKU she said "Well you're going to have to wait for me then". She was very rude and unprofessional, I ended up doing the return with a very nice girl named Emily with natural red hair. I spoke the the manager of this Menards and she said she will do more training. But I am appalled at how this woman treated me as if I was stupid and a nuisance. I would like for her to be fired because if that's how she is going to treat me that is how she treats other guests and if that's the case she should not be in customer service. I will continue to complain until she is fired.