Hello, @BizRebel. I can defineitly understand your concern with having a second number. Are you sure your galaxy device just doesn’t have Dual Sims? Here’s a link from our UK site, but the information would be very similar to our US model phones as well. Check this out, https://www.samsung.com/uk/
If you ever feel your device has been compromised in any way, I recommend checking the follow link for great tips to keep your device safe: https://www.samsung.com/us/
Lastly, if you still feel uneasy regarding the device having two numbers, I would recommend reaching out to your carrier for further assistance and explanation.