HDFC Bank — Credit card payment

Address: Chennai, Tamil Nadu, 600039

I'm using hdfc credit card for more then 8 year's, due to some emergency i cornered to use my card to the credit limit rs 168000/-, since that time i'm making partial payment of rs 6500 to rs 8600/- every month, i've almost paid more than 400, 000 lakhs what i've used, but till date i'm unable to clear the amount.
I called up hdfc credit card customer care to help in converting my outstanding amount to emi, but the tl or the manager told that its not possible to convert and i need to pay in 1 short or need to keep paying the minimum amount till i clear the amount.
Sir./ madam, every month the bank is adding 4500+ as finical charge + 3.5 rate of interest + over limit charge, which is almost covering my full partial amount what i pay every month. I'm suffering a lot with the bank and i'm unable to clear the amount.
Adding to the above i have taken three personal loans and it has been paid completely without any delay.
I also torched my your customer care persons when am trying to say them it will be paid, please give me some time, but they behave very harshly to me,
As am customer to hdfc for nearly ten years, but that also not taken even a consideration, i also getting message that your hdfc account will be blocked,
Please consider that am your bank customer nearly ten years.
Credit card no.[protected]
Mob.[protected]
Email: [protected]@gmail.com

I greatly appreciate a solution for my issue. Pleaseeeeeeeeeeeeeeeeeeee,

Thanks
M. Sathishkumar