Counteroffer problems
Hello. I have a situation that I am trying to handle in the correct manner. I had a lot of flatware listed for 149 buy it now/best offer. A buyer offered 65, which I declined. They then offered 65 again. I declined. They then offered 65 AGAIN with a message saying that they were not a seller, so they would not be re-selling the items and that they just needed some teaspoons to refill their set. Again I declined. They then offered 70, I counteroffered for 70 with a message saying "If you just need some teaspoons to refill your set, I can offer you 8 teaspoons for your offer of 70. They accepted counteroffer. They received their 8 teaspoons yesterday, and I got a message asking where are the rest of my items? I said, in my counteroffer I stated that for 70 I could only do 8 teaspoons and then the buyer flipped out on me saying they never saw any such message and is asking me to show them that message. When I try to find it I can only see the counteroffer, but I can't find the message that goes along with it.
My question is two-fold. Does anyone know where I can find my completed offers? And 2, how should I handle this? I have already told them that they are welcome to return the items, free return shipping and they will receive a full refund, and they are not willing to do that. They said that they want All the items that were in the listing and they want them now...
Thank you in advance for your input.