Cars24 Services — Documents and support

I have bought the car from cars 24 since then I am just calling the supervisor to check the details but I am not getting help at all. My issues are listed below -
#In my RC Name is Wrong & they are not changing it.After me calling and following months now they said again fresh rc we need to apply and it will become 3 rd owner.

# I have been asking for insurance documents till today I don’t have the documents and policy is expired and I can’t buy new can’t renew without policy number .how is responsible for extra money ?

# car extra key is not been given to me.

I have tried all best way but it’s failing and no help .

It’s a worst experience, harresment and definitely it’s not Hassel free in car24.