Vodafone — Postpaid to prepaid application declined and following with unreasonable bill.

Vodafone don’t care for its customers altogether! This company act like a blackmailer rather than a service provider.

When I was in India we(the number is on my brother’s name because I am using this number so I'll be referring myself going forward) applied to port the number over to prepay. We applied the postpaid to prepaid port request in one of the vi mini store in our city. The first time there was some system glitch and we were asked to resubmit the documents.
We resubmitted the documents again. Later, I received three different calls from Vodafone to pursue me not to leave the postpay plan. They weirdly sounded so desperate to keep me on postpay.
When I told them that I am going outside India and just need to keep this number going. They gave me all sorts of offers to match the prices with prepay and what not but I clearly told them to port it over to pre-pay.
I was confident that my pre-pay sim will be activated. Two days after I left India. When the sim didn’t activate even after a couple of days so I enquired.

Guess what Vodafone didn’t activate my pre-pay sim. Why? I don’t know?

Now I am outside India both sims not working(prepaid not activated and postpaid not receiving any network)! I can’t easily connect to customer care because automated system asks for OTP. I can’t receive OTP because there is no network. I can’t even receive important OTPs which was the main motive to keep this number alive in the first place.

This week I got a bill! (For a number that is not even working) - 550 rupees!!
On top of that, I am told to buy a 149 plan to active international roaming if I wish to use sim outside India. (If I am not using sim from last one month then why I am billed?)

I raised a complain and somebody contacted me on Whatsapp. I told my issue to that CUSTOMER CARE representative - and he played the “Hello Hello I can’t hear you..’ game and later stopped responding to messages.

THIS IS THE LEVEL OF SERIOUSNESS VODAFONE SHOW TOWARD A CUSTOMER.

What’s my fault why should I pay a heavy price?
Why didn't they ported my number to prepaid?
Why can’t they now activate the prepaid sim I have with me?
If they can't activate the prepaid sim I have with me then match the prices with pre-pay.