Am I being unfair ?

My in laws have a habit of telling me what to do with my LO. 2 SILs are older with no kids and husbands. SILs and MIL believe that my LO is their baby. It’s really weird. They have an obsession with her that makes me uncomfortable. They don’t respect boundaries. The first situation I am annoyed about is my MIL is going on holiday for 3 weeks and she gets my LO 2x a week while I am working. I have taken the days she has my LO one off from work. She got annoyed with me to say those are her days with my LO so her daughters should get my daughter and for me not to take that time off…she has repeated it multiple times. My reply is ‘I have taken the time off anyway - so I will let them know’. I’m annoyed the 3 of them organise between themselves what they are going to do with my daughter. The second situation is they bought me a massage for my birthday. And said this is a gift for all of us. You get your massage and we take her. Can they not let me make arrangements for my own child…if they said - we are here if you need us when you get your massage. But instead they tell me what to do.