The cremitorion gave my brother my dads ashes and I own the plot

Who paid for cremation and who is the Executor of the estate?

And you can't talk to your brother?

Yes, you ask your brother to do it with you ?

I will assume your family does not get along.

So it goes back to who has the legal right to the ashes, what was the dad's will if any, who was over the estate, who paid for cremation,