Jio — voice service barred

I rechared jio with 399 but even not being a month jio sended me a msg informing that my voice service has barred.. Nd again i recharged with 399 but again not being a month jio sended me the same text.. I would like to inform jio that i m just using it for my personal use only.. Please inform me why this issue is going on? High duration or repeated cal?