Need help

[matty39]

I have a return problem. I sold two items on the bay a few weeks ago but mistakenly (my fault) sent each to the wrong address. One buyer informed me of my mistake and graciously said he would return the item so I could redirect it to the correct buyer. I e-mailed the other buyer of my mistake and asked him to return the item and I would send his item to him as soon as I received it. I informed both buyers that I would pay for all return costs. My problem is with the second buyer. I have e-mailed him twice with no response. I checked tracking and it was delivered to him a week ago. I need some advice as what I should do next.