Can't login to my Currys.co.uk account

I had an account with Currys and had tremendous order history with them. Recently I went into my order history and tried to log in but it says I am either not registered or I have entered the wrong password. I used the Reset Password link to change my password. I received the reset password email successfully and I was able to change my password successfully also. But when I try to login again, it tells me the same error that I am not registered or password is wrong. I have tried resetting my password so many times and no help.*I called their customer service and told about my issue - they said they can't help me and I have to use Reset Password link. Which I told them that I have done that but they said then create a new account.*I saw that few others are also having this issue and they were told the same as me.