Parents had unexpected response to my text

I sent a very detailed text to my parents. I wrote out my frustrations and things that have bothered me for years. At the start of my message I mentioned that I love my parents and want to improve our relationship. The only response I got was a voicemail from my dad saying that he “wanted to hear my voice and make sure I’m okay.” I realize this is without much context for Reddit but I’m at such a loss of how to respond - or if i should respond