My sons name is Oliver as well but I have no problem with people calling him Ollie. I personally find it adorable but she should respect your choice & call him by his full name.

She should respect your wishes. It doesnt matter WHY you don't want your son to be called Ollie, you've made it known, and she's rude to do it anyway.

I have nothing against nicknames for instance my fiance calls him baby Oliver, I call him baby bird, my sister calls him baby O, etc. As soon as I found out I was pregnant we knew if we had a boy he would be called Oliver and people asked me then if we were going to call him Ollie and I said absolutely not. I cant stand it and honestly I don't have a reason. I just feel like she should have the respect for me not to call him that knowing I don't like it and its not his name. Her real name is Tamra and she goes by Tammy she hates to be called Tamra so out of respect for her I call her what she wants to be called so I feel she should do the same for me.

why can't she give him her own special nickname? is there a backstory to why you prefer not or is it just I don't like the name? lol
ppl call my dtr Baby G but that was always my name cuz I'm the youngest of my siblings n some call her GG which is also mine(her name is Gia) lol I don't like it but it doesn't bother to the point of saying don't do it lol maybe it's just the hormones lol