galaxys10 false data

I stopped paying the bill for a Verizon galaxy s10 months ago and ragndomly my phone started allowing me to use fb messenger, youtube, and everything else requiring data without wifi. Then it would only allow youtube and messenger and now it just allows me to use messenger. My question is why is it letting me use anything at all without wifi as if my phone service has been turned on? It never let me call or text off my original number just services that would require data.