Grandson's cruel wedding rejection causing family rift

I'M A 69-year-old married woman and I've been with my husband for 32 years and married for 18 years, and it’s a second marriage for both of us.

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He has four children and I have one daughter, and between us we have eight grandchildren.

Our eldest grandson is getting married in September and I'm due to go on the hen weekend with his intended.

However, he refuses to invite my daughter, her husband and their two children to the wedding, even though my husband has asked him several times. Two weeks ago, he and his fiancée came to dinner at ours and, after his usual rude, moody behaviour, I left the table and told him hed ruined our dinner and called him a bad name on my way out.