Vodafone — Faulty sim

In mid of June 2022, I have changed my Vodafone service from postpaid to per paid. After that, since I came to Ireland (3 months), sim is not working . I have contacted customer care and later escalated to their technical team

1. Enable International Roaming: Goto Sim tool kit/Sim services/Vodafone Services/Tools - Roaming - International roaming
2. Select Network operator manually: Goto Settings - More - Mobile/Cellular Network - Network operator - Select Tie Up network.
3. Select Network mode as GSM(2G) only: Goto settings - More - Mobile/Cellular Network - Preferred Network type/mode - select GSM only or 2G only.

I told them that the sim toolkit has no international roaming option. The Vodafone team stated that since the Roaming option is not visible in the toolkit, sim is faulty and I have to replace the SIM. They closed the case without any further notification.
I asked them to give the new sim to my parents as I am abroad but they asked me to change the SIM by visiting Vodafone India store. Is this practically possible? There should be a way to deliver the SIM to international customers. They have sold me a faulty SIM. As a postpaid customer I have paid thousands for my international roaming. Their roaming packages are also expensive.

Their response was really unprofessional and unsympathetic. On top of travelling to India, in today's chat with customer care, they asked me to pay 50 rs too.