Anonymous wrote:why can't you refuse it? Contact the service and see if you can return the subscription. If not, sell it discounted to someone else. Use the money to hire a housecleaner.
If she asks, you say, "yeah I looked into it and it wasn't for us. thank you for the gift though."
This was my first reaction as well.
Contact the diaper service and ask them what the steps are if you do not want it. But the person to do this is NOT you, OP. It's your husband. And he, not you, is the one to tell his mother, "We talked with the service and it wasn't for us so we've (asked them to refund your credit card or whatever happens). Mom, we really appreciate the idea of your wanting to help us with something that's a day to day chore. This is a cleaning service we found and it costs the same as the diaper service--can we swap them?" Unfortunately, as the person who paid, she might have to be the person to cancel the diaper service so he would have to involve her in that end of things. I hope not.
This is not exactly a "hill to die on" as the expression is here on DCUM, but at the same time, this is also a pretty intrusive kind of service if it's unwanted and a waste if it's unused. And it's not like it's a fruit basket of the month club where you can take what you want and haul the rest to the office or give it away to friends. Were you crystal clear that you did not want it, or did you and/or DH kind of try to be nice when you said no, and MIL saw that as polite waffling, so she went ahead?
Also, you mention the family dynamic with his being the baby. Think about that and if you feel there is some larger, longer pattern of his putting his parents ahead of you -- if he always wants to keep the peace with mom and seems to fear upsetting her -- that's learned behavior for many adults who have overbearing parents, and you and he may need some serious talk about whether he's more concerned with peacekeeping than with setting boundaries. If this is really just a one-off thing that's different, but if there's a larger pattern with him -- time to talk about that, especially if he doesn't recognize it.