Help with Gurstel Chargo

I need your help.

To make a long story short. I've been in South Korea for almost a year and I have a credit card with Chase that's about a year overdue. I found out that later that it was sold to Equable Ascent Financial (EAF). I then e-mailed (EAF) but I was later told that Gurstel Chargo (GC) is currently managing the account on EAF's behalf.

Here is the problem.

I e-mailed them several times to do a debt settlement. I've even sent several letters stating that I wanted to do a debt settlement. However, I've never received an reply to any of my e-mails or to any of my letters. I called them today and they asked me where I was residing and instead of telling them that I was in South Korea I told them I was in California because that's where I was from. They then told me that I needed to call someone else and then they asked me if I was willing to be put on hold while they get the number. I told them "yes," and they then put me on hold until the phone hung-up by itself. I then called them three more times and every time I called them they hung-up on me without saying a word.

What am I suppose to do now? I really want to resolve this problem but it seems to me that Gurstel doesn't want to. I appreciate any help that you guys can give me.