Reliance Jio Infocomm — network & calling

Just a day before i. E on 19.01.18 i ported my no. From vodafone to jio. I have been constantly phasing problems which are as follows.

1. I dont get any calls when my phone is connected to my personal wifi
2. I was asked to download an app which doesnt allow me to call anyone without an internet connection, unlike other service providers wherein if there is no 3g or 4g i can still place calls.
3. Its almost equivalent to any other internet based calling app eg. Watsapp (Note: watsapp is way better though)
4. When i get calls from callers who are not using the jio network they just dont seem to be able to hear me. Only when someone calls me from a jio no. They can hear (With absolutely poor quality)

With my work being highly dependent on me being accessible 24*7 on phone, jio has really made my life difficult in just 12 hours o[censored]sing this service.

I need to port my no. To another reliable service provider asap, even if it mean paying extra money for that. Please help!