Multiple ServiceNPCs showing up

Yep, just happened to me. Have free services and tried firing all the ugly simsmas sweater nannies and they came right back even after a save/  log out.

I’ve managed to reproduce this bug simply by

1. Having an infant
2. Hiring a nanny
3. Traveling out of the lot
4. Returning home

Upon return, the original nanny will still be on the lot, and a second nanny will spawn, with the “Hello!” notification and all. Both will need dismissing and will charge the household. 

Have this issue, every time you leave the lot and return a new nanny will spawn. I currently have about 6/7 nannies. Amusing but they keep getting in each others' way and the kids aren't being cared for. 

I'm currently only playing with the base game

my sim has a baby, goes to work, a nanny comes. (all totally normal) 

baby ages up to infant, then toddler, then kid. nanny has not left once. (such a caring woman.)

nanny never sleeps. (wow, she seems superhuman.)

nanny gets fired.

sim goes off with rocketship, and automatically there is a nanny hired for the kid. (all good and well.)

within a few seconds, there are FIVE nannies introducing themselves, walking into my sims' home. 

my sim has one kid. she does not need 5 people for that.

My game keeps spawning new ranch hands. I have got at least 15 now and there is still coming more. I tried closing but that doesn't fix the issue. When i restart te game they just continue spawning.

Does anyone else get multiple nannies coming at the same time? They tend to never leave, and also, I have 3 on my lot right now!!

I suddenly also have this bug. 

Another nanny might also spawn after re-opening the game.

I no longer needed a nanny, so I dismissed her. I was charged, and she left. She came right back, so I dismissed her. I was charged, and she came right back. So I deleted her from the unplayed households. Then 6 more showed up. So I put them all in one empty household, thinking that would pull them out of the game and that would fix it. It did pull them off the nanny reel. But six more showed up.  I had this problem last week with Ranchers. It is annoying. Hope the info helps and you can fix it. In the meantime, I have 12 super ugly Sims randomly dressed like freaks that I can make over and let loose into unplayed households. 

Thanks tdewtx