I just got my 2009 MBP replaced last month. What a struggle. I finally had to find the right person and explain how it was an embarrassment in front of customer

I just got my 2009 MBP replaced last month. What a struggle. I finally had to find the right person and explain how it was an embarrassment in front of customers to have a laptop that can't handle our software. I buy my own keyboards, mice, dongles, etc but I'm taking those with me if I leave. We have a program that allows you to purchase things. I ordered a mouse one time and was told the order total amount was too little. So I added a few other things I might need and was denied.