Can I cancel a ship to store warranty replacement?

The assurant agent kept pushing for warranty exchange because the phone keeps heating up even though I told her I already went to T-Mobile and they told me I have to go through insurance. Transferred me back to T-Mobile on the phone & they are sending a phone to a store near me on Tuesday. They said since there’s no physical damage to the phone it’s a warranty replacement. Now, I KNOW this isn’t going to be a warranty replacement, there’s no way the store will accept it, as the screen has been replaced before through a third party. Can I go to the store in the morning to cancel it? My fear is when I go Tuesday they’re gonna give me the replacement phone and then put it on my account (charge me the phone) I want to go through insurance, & pay the deductible