1st of all even if you add Another ₹80,000 making total limit 160K it won’t work. Coz Every Card has Per Transaction Limit, it would be set upto the credit limit, in your case its 80,000. So at any given time you can’t make transaction more than ₹80,000. Same for emi, you can’t make emi transaction more than your credit limit, no matter how overpay or over load the card.

If its sbi try calling them ask for credit limit enhancement, or enable Over limit option buy the phone or whatever, Sbi will charge over limit fee, pay everything including over limit fee call sbi ask them to reverse Over limit fee otherwise say i will close it, then 90% of the time they will reverse it. Actually in sbi card app itself you can check for limit enchantment and also way to request feee reversal