In my experience using Axis cards or any other cards, nobody suddenly increases credit limit by 300% unless it's asked for and supported by documents, etc.. The usual auto increase is anywhere between 25-75%. So in your case, an increase from 94k to 3.6 does indeed seem to have been a mistake...
@BestBanker Hi, I had applied for AMEX smart earn card as salaried. The application got stuck as I wasn’t able to provide proper documents. Thing is, I’m a PhD fellow receiving stipends amounting to 5.4 lakhs per annum. But since they’re stipends we don’t get salary slips and it doesn’t appear...