Icici credit card default in cibil report

I had a credit card in 2008, in 2010 i waa travelling abroad so i called bank customer service and requested to close my credit card and the due amount of 20000 i said them that i have left cheque at my place and they can send the collection person.. I came back in 2011 and ICICI contacted me saying i owe them 41900. I told them i am happy to pay 20000 as i had used that amount but the extra 21900 i cannot pay as i have not used card for a year and also had requested to close my card. Bank did not agree so i did not pay the amount. For last 10 years the credit card shows active on my cibil and i have not got any loan. I had heard after 7 years the default will be removed from Cibil but its still there. I dont want to pay ICICI as they have already made me suffer for last 10 years and i have not got any loan due to them. How can i remove the credit card default from Cibil . I am fed of bad cibil score. Its 682 but i am.not getting any loans dew to credit card default. Please advise what i can do.