Request to close my Account

I have an RCS card, that i have paid up. Today i called to request to close the account. In was told i need to send a letter and a copy of my ID. I find this very ridiculous, because they allow to request to open accounts over the phone. Why do I need to send a copy of my ID to close the account, when they already have it, because i gave it to them when i app**** for the account?<br> Why must it be such a painful process to close an account and yet it was so easy to open it?<br> All I want is to close the account!!!!!!