Dear Mr. Rex,
I am more than happy to offer you my services, being a highly experienced Call Center agent for nearly 10 years with a globally recognized company and proficient in English at Level C2 of The Common European Framework of Reference for Languages.
If this work entails Skype communication for answering "inbound calls", then I see no reason why you shouldn't consider me as a candidate, even though I am from a European country. I know you haven't stated the hours per day needed for this position, but I believe that we can come to an agreement if you are interested in doing business with me.
I hope to hear from you soon,
Darko