I've NC for this as I don't know who else is on here and don't want to be outed for slagging off the in-laws. Please excuse my being so vague.
OH's parents are divorced and one has moved abroad, the one remaining parent he has in the country only bothers with him when they want something - money.
It was OH's birthday in November and neither one sent him so much as a card or bothered to wish him a happy birthday.
It is our daughters birthday today and the local parent came round this morning - how nice I thought, they've come to wish DD a happy birthday.
Nope, they wanted to borrow money. No card for DD and didn't show much interest when we said it was her birthday, just wanted to move the conversation on to money.
Then said to DH "it was your birthday not long ago wasn't it, I just can't remember the date" 
We also have a baby (old enough to be crawling) and this parent has seen him twice during his whole life and those occasions happened only because they came to ask to borrow money otherwise they wouldn't have met. The other parent hasn't met baby but I appreciate that's slightly more understandable as they live across the world.
The local parent works 6 days per week and is always busy on the one day off they have so I understand that they're pushed for time, but when it comes to wanting something they can always spare an hour to come round and ask and when they're not in need we don't hear from them.
They're not interested in having lunch or having a chat over a cuppa whilst spending time with the kids. OH and I are never invited round, it's not because we don't make the effort. I've tried to foster a relationship between this parent and the DC but they're just not interested.
OH always remembers his parents birthdays and I always send a card/Facebook message and a token gift.
I could see the embarrassment on OH's face as they left the house this morning after being told no, sorry we don't have any money spare. I don't want to compound his feelings of rejection/being used by pointing out how fucking rude they are but I know he feels embarrassed/hurt about the fact they're like this and that I witness their indifference to the DC and OH.
AIBU to say this is appalling treatment, of OH mainly.