My baby boy's name...

Okay so we have already named our newly arrived son (born 11/16/19) Azerith Curtislee Witt.. We love it and my kids have three sets of grandparents due to a re merry. Well 2/3 grandparents say they don't like the name and or there is no nice nickname to it and it will be difficult to spell.. and we are so over it. How is a nice way to just say stop because I believe in respecting my elders, but it just won't stop with the comments or the "joking"... It still hurts and I don't want it brought up again... 😓😓😓