HDFC Bank — Regarding credit card dues settlement

Sir i have credit card in hdfc bank, last 6 months i don't have job right now due to my serious illness, so that i have plan settlement my credit card, last 3months the hdfc peoples contact with, i am told to him, pl give the settlement, but the people is not interest to settlement my credit card, they peoples always to confuse me and they are spoke to me to pay some given amount & after payment they will process settlement & after payment they stop picking phone. This month one executive Mr. Shani Mishra called me your card payment has settled by us & I have letter, Final settlement amount is 269000 rupees & first I have to pay 20000 rupees & after that 83000 rupees is each months up to three months.When I will pay 20000 rupees
& one month payment that is 83000 thousands then he will settlement letter.Now I have paid 20000 rupees & two months payment that is 166000 rupees at a time & now he has stop picking phone. When I have contacted to Costomer Care & collection department they denied that card dues had not settled. So please to understand my issues and close my card with lowest settlement amount.