soo.... I asked my parents if I could have a emotional support dog for myself they said yes well…

soo.... I asked my parents if I could have a emotional support dog for myself they said yes well when I found a puppy to train and that would be suited for me I told my parents and they got mad, said it was supposed to be a family dog and that we where supposed to make the decision all the together on what kind of dog to get.. which they didn't even told me that it was supposed to be a family decision and I already bought the dog I was supposed to pick it up this Friday and they told I couldn't get one anymore and to call the store and tell them I can't have the dog.. was I in the wrong for doing what I did...??