This is a long story that has been going back years but I will try to give a simple version.
FIL and MIL live about 15 miles from us. Over the years, they have never had much to do with us. They would phone us/we would phone them inviting them over and then they would never turn up. MIL would make excuses but we would never hear from FIL.
MIL does not drive and if we want to see her, we have to go to her or bring her to us as he will not bring her.
We have no idea why he has gone like this as he drives to the west country twice a month to see his daughter.
To put it in context we see FIL maybe 4 times a year and MIL maybe 10 times a year. Yet they arrange to meet up with us maybe 30 times. We have often been expecting them at say 12 o'clock and then my daughter shows me pictures that have been uploaded to facebook of them at a Zoo in the west country with their daughters children.
I have no problem with his relationship with his daughter and other GC's and we are all really close but I did ask him to not tell my children about the fun he has when he is round if he is letting my kids down in the meantime (He seems to make a point of doing it and I feel like he is picking on the kids to get at us). This resulted in him refusing to speak to me and that was the last time I saw him.
DH would have walked away years ago but I have always encouraged a relationship to make an effort for his mum. I do feel sorry for MIL as she makes some effort but she has still played her part in letting the kids down on numerous occasions and the relationship is very one-sided.
However my 3 children have birthdays in the same month and he didn't call, or phone. We collected MIL from work and had to drop her home. My eldest was very upset that he had ignored her as she is most aware of the situation and being constantly let down by them. We later found out that he had been to see someone at the end of our road while the party was on yet he still let us drive MIL home and didn't pop in.
Fathers day is coming up but it is also my friends 40th Birthday. I have decided to attend the 40th birthday party with DH and kids and I will mail his present. This will be making a huge statement where they are concerned but I think it will be the break that needs making. I am fed up of always making excuses for them to the kids.