Dear Mr,
I understand you have a customer relations project, and I believe I can be the perfect person to be working with you in this position. My first experience with costumer relations was working at Disney World, where you have to be as helpfull as possible, at anytime you're working. In the last 4 year I've been working with retail ecommerce, one of the positions I'd worked was sales manager, where I had to be available 24/7 to any emails or facebook inbox messages. Nowadays I only work as freelance, have my smarphone all the time with me, and have the availability you need from tuesdays to fridays.
Here is how I'd answer to a costumer who's asking for a refund due to a faulty product:
Dear Mr. xxx,
I'm sorry to hear that you had this experience with our product. We are a reliable sports company manufacturer known by our quality, and so we will be glad to solve this as soon as possible.
Could please be more specific about this fault?
We'll be providing your refund as soon as we receive the product back (I don't know your company policies...). Please post it with the return tag.
Best regards,
Customer Relations Dpt.