I need advice about my in laws

I need advice, suggestions or opinions.
So my husbands parents, they always are there for SIL when she needs them, and it is okay, they take care of kids buy them gifts and invite her and her kids for diner.
Meanwhile me and hubby we have a son with autism, we need help sometimes but they are never here for us, they never buy gifts, and never even call my husband to ask how he is. I tried talking to MIL she says she loves us equally but nothing changes.