Hello, @Bristol. We apologize for this experience. Definitely want to take a look into this for you. Please send us a Private Message with your phone number and PIN. To send a Private Message you can go to your profile and click on the icon with an envelope. Then you enter the username of the person you want to send a message to and the subject. Or you can go to the user profile by clicking on the username and click on "Send this user a Private Message".
An update: I do not currently have my S20 5G, purchased directly from Boost online, in my possession - Samsung is shipping it back to me now...
You might wonder how I got here, so, the backstory: I went back and forth with Boost; phone calls, chat, in-store (they had no idea **** I was talking about, apparently had never sold or activated an S20 without a huge hassle, but I'll elaborate on that a bit later), and was told to send PM's here that were either ignored or brushed off ("tower down in your area, just wait 24-48 more hours!" Which is weird, because the GF's S10, also with a Sprint SIM, was getting consistent 3G at worst, and 4G LTE in most cases - Sprint 516tq SIM in each should = same network, just saying...)
Last Sunday, spent a couple hours on the phone with them, and finally was transferred to tech support. Was told the phone wasn't compatible with my current plan, so we switched to the $50 plan - I had been on a grandfathered Virgin plan. I had asked if I needed to change my plan at least a half dozen times by this point, and was continuously told I did not. Then I was told to put the Expanded Network Sim (Boost, orange card, in the envelope included with the phone) into the phone. In the process, the call dropped - I was calling from my gf's Boost S10.
Called back, rep refused to transfer me back to tech support, insisted I had put the SIM card in wrong, and that the 2 phones were on different networks, with different coverage - after 20 minutes of being treated like a child, I said I would call back and just have someone else transfer me back to tech support. I was told "go ahead, they'll tell you the same thing." To be fair, this was the only rep that I felt was outright inappropriate in their handling of my situation, as far as Boost online chat and phone reps are concerned.