e-bag is irratating me!

The last time I bought of ebay was a circus. I bought a timing light from a1 hawk from Portland Oregon. I paid the buy it now price with extra shipping charge to be shipped by USPS now keep in mind that in their ad that they state this is the way they ship to Canada because of UPS handling charges. I wait the normal 3 to 4 weeks for the light to arrive then one morning the UPS van appears with the light and $57 in handling charges. I refuse the package and e-mail the sender who cannot understand what happened and will get back to me. Then 3 weeks later they e-mail me that they cancelled the transaction because of UPS charged them $20 return fees and it is so hard to ship to Canada! I wait a day so that I don't reply and say something that I shouldn't and respond that we had agreed on the price the cost of shipping and the method of shipping and it was not my fault they messed up on shipping. No response, it seems people have a hard time taking responsibility when they mess up.