The BBQ we were uninvited to! Twice!

Our friends K and A invited us to a BBQ to watch the NRL (National Rugby League) Grand Final. We accepted and planned towards it. Two days before D got a text message from A saying that they had changed their minds and were cancelling.

D rang A and said cool, no issues and A suggested that we catch up for the Bathurst 1000 Motor Race. D agreed and we planned for this BBQ.

Again 2 days prior D got a text message from A saying that they had changed their minds and they were cancelling. D was pissed off.

A is a good friend from the past and was the best man at our wedding. K is my friend from work three years ago.

We set them up and they lived in our rental property for a year and now live in CH.

We feel a bit pissed as well as a bit hurt, what do you think we should do?