Still getting debited after cancellation

I cancelled my contract with Rain around the 7th of June 2025 on the website. And was notified that I will be billed till the last billing cycle. I was not sure whether I was paying in arrears or in advance so I ignored the debit that went off on 25 June 2025. Now I am getting another debit this month.

And I cannot get help anywhere because billing department peraon is just giving me a case number and dropping the phone.

Iam going to need both my refunds. Iam highly upset.