HDFC Bank — Aggregator emi

Recently I purchased a mobile worth 14499 and paid amount using hdfc credit card and after 5-6 days they credit the amount and convert it into offus EMI without my knowledge.

Purchase date: 12.03.2022
AGGREGATOR EMI - OFFUS Date: 18.03.2022

I have paid the whole amount after purchasing the mobile but still, they do it. Please resolve it as soon as possible.