JJ from iStore canal walk it terrible!!

Today I called the iStore to ask whether they can assist in replacing my phone's battery. The call centre got the Canal Walk branch to call me, they confirmed that I can bring in my phone and and get it replaced, it will take a hour or 2. I went in immediately, and met JJ, who works at the iStore. I asked JJ if my phone will be wiped, he said that there is a slight chance, but only in extremely rare cases, and reassured me that I don't have anything to worry about, I was very thankful. He then turned his laptop to me and asked me to enter my phone's password (which I expected would be the case, and I would've been happy to give it), I asked him why they need me password, he then said that they need it in order to run tests after the repair. I then politely asked if it is not possible for me to just give them my password afterwards while I am present. He then turned the laptop back to himself and said 'I am going to wipe the phone, no need to give me your password.' I then told him that he has an attitude, he giggled and looked at his colleague (as I am crazy and making sure they see this) and said, I don't have an attitude. I told him I will not continue with the repair, he didn't hesitate to hand me my phone, I was barely finished with my sentence when he handed my my phone. He could've just said, 'no, unfortunately you need to give you password right now' then I would've. I have been considering switching to android for a while now, and now I have made the decision, I am switching. I will not be treated like a dog!!