T-Mobile phone fix location Scam ripoff changes parts for older ones Orlando Florida

So I'm traveling from New York city to Orlando on vacation. My galaxy s5 charger port didn't work. I looked online for a T-Mobile retailer who is a professional to fix my phone I found one near my hotel at 9924 universal blvd. no problem I took a drive to the store and meet with a representative named mr lee. I spoke with lee for about 10 mins as he checked out my phone. He discovered what I had already told him my charger port does not work. Mr lee broke my screen and now and now  asking me to pay him an extra 140+40 for charger port. He first told me he could fix in a hour so I said ok and went to my hotel room. I came back in exactly a hour and 20 minutes. He was in front of the store smoking a cigarette. He left the store unattended. He wasn't nice very rude but didn't pay much mind to it since I'm on vacation and I needed him more than he needed me. He probally figured I had some money since I was on vacation. He is a professional and does 100s of phones a month. He couldn't of broke my screen unless it was on purpose or he just switched it with the bad one I saw on the table.it will be cool if T-Mobile doesn fix it or give me my screen how I gave it to them. But I will not give him any more money than what I'm supposed to. I just want to get out the message Do NOT TAKE YOUR PHONE to 9924 universal blvd in Orlando Florida 32819 . He will switch parts and try to make extra money on you. He tried to sell me a screen under the table for cash only no tax. Every T-Mobile location charges you tax. I just want my phone , he wants to rip me off For my money.