Fizzy Water Fans: If, hypothetically, you owned a Carbonating Device from a Popular At-Home Fizzy Beverages Company that has, at times, been "somewhat to extremely problematic", I am here to tell you that this company in Wisconsin will refill your CO2 canisters by mail:
https://www.sodasense.com/
@mohini It's a small company in Green Bay, WI that has no affiliation with SodaStream/Pepsi, but I don't know anything about the owners' politics. As of right now, they just make CO2 canisters and provide the refill service