apple watch with samsung phone

The representative you talked to was mistaken.

The Apple Watch is an iPhone accessory.

The GPS model pairs to an iPhone and depends on the iPhone for most of its radio services

The Cellular model shares the iPhone's phone number.

None of these dependent services are included in Android software.

You cannot, an apple watch can only connect and pair to an iphone.

Apple has a 14-day return policy. I suggest you use it.