Dietician duped me need help

So a dietician named Priyanka Yadav charged me 8 k for three months plan . But the very next day I told her that she is making inaccurate charts and same chart for My husband and me won't do . Upon insisting a lot she agreed to add a protein and dumped the entire RDA in one meal . So I asked for cancellation and refund. My sister and mom were using her charts previously which she took separate payment for in January. Now she is using their charts and saying she has already provided services..has blocked my number,, twiter,facebook instagram. Refuses to acknowledge any payment. The business name is Bite and diet gurugram. I haven't used their services for a single day. Also during my mom being on her plan we found her claims of sugar control were false. Since I am medico I realsied the scam in due course. Please help .