What to do when family keeps mispronouncing my daughters name?

I named my now 9 month old daughter Lilliana, to be pronounced Lily-Ah-Nah, but family members keep pronouncing her name Lily-Ann-Ah. I have corrected them several times, some are getting it, some not. I even have an aunt who said she thinks it should be pronounced Lily-Ann-Ah so that's what she's going to say. I find it extremely rude and disrespectful to be calling my little girl the incorrect name. I've thought of telling her that it would be like calling her granddaughter Maya, May-ah instead of My-ah just because that's what it looks like, but I don't want to stoop to her level and be rude back. Any suggestions how to handle this? Really wishing right now that I would have switched my daughter's middle and first names since her middle name would not cause this issue. I appreciate your help.