Oc Technology — Ransom activity

This company is same as vr enterprise. There company name is oc technology they give some mobile mobile app to do the work. But when i installed it, the app was not working. I tried to complain their helpline they were just telling me to installed and uninstalled the app but it didnt worked.
Then after some days i told them to cancell my wrk they charged me the amount of 5000k and then they told me the agreement is of 11 months and took 15, 500k which also i paid them... And then again they called and told me pay more 30k for digital signature something but i didnt paid to them... But after few hrs they provided me the noc, i just want to know whether this company is genuine or no... I also want my refund from them if the company is fake. After paying also they are sending me legal notice
This are there helpline email & mobile no from which they were contacted me.
[protected]@gmail.com
[protected]
[protected]