imessage hack?
I handed in my iphone 5 to a service company because the speaker wasn't working, they needed my passcode etc but I made sure to outlog myself from all apps and iMessage. However, when I got it back now, my apple laptop asks me if I want to add this number to my iMessage. What I get is an unknown phone number and the option to add it to imsg because it was used on apple id *enters my apple id* on *enters the name of my phone*. When I check my phone, this number is added under "send and receive". Does this mean someone hacked into my phone, someone who works in the service?
I deleted it and changed my password for appleID, does this mean I'm safe?
Thanks for any advice!
iPhone 5s