Can't Use WhatsApp on My Jio Number for 15 Days

I use a Redmi phone with a Jio SIM card and for the last 10–15 days I have not been able to use WhatsApp on my number. When I try to open WhatsApp, it directly shows a message saying that I can no longer use WhatsApp on this number and the application does not open at all. Because of this, I cannot communicate via WhatsApp on my mobile number and my daily work and personal communication are being seriously affected. I contacted customer care, but I did not receive any clear answer or solution regarding why this has happened or how it can be fixed. I request that my WhatsApp service on this number be checked in detail, that I be informed clearly why such a restriction has appeared, and that my access be restored or a clear written explanation and guidance for solution be provided as soon as possible.