Inlaw trouble help!?

i had an agruement with my father in-law when he rang up yelling at me over having to sit on the same table as my parents at our frinds engagement party. He said that he was'nt going a day before the party cause he had to sit on the same table as my parents. i said to that isn't it time that you let bigons be bigons and he said that he is not ready to talk to them yet. (keeping in mind that i had the phone on loud speaker so my husband could hear everything) I then said to him that he should reconsider coming to my husbands, sons and my birhtdays then. He then said for me to stay away from their family functions. i said fine and hung up on him. i am so sick i us having parties and cause my husband family wont take to mine being very uncomfortable. my husband rang his dad back and also had an argument with him for the way he spoke to me cause he has done it more than once. was i wrong saying that to him? we are so sick of being treated like **** by them. what do you think? we have all these family functions coming up now with christmas and everything and i don't want to go cause he said for me to stay away. my husband said that we should still go that he had no right to say that on behalf of people that we don't have a problem with. i ju.st feel to uncomfortable. i can't believe that he would rather his grandson miss out on the family parties. do you think it is very nasty? i can't get over how my mother inlaw comes to our house as if nothing is wrong and hasn't even said anything about everthing that has happened. we went to one family function and she did not speak to us at all. then she is ringing my door bell to see our son cause he wasn't at the party. what is wrong is it me with the problem? what should i do should we go to these parties?