My kid visited a Taekwondo class and they are blowing up my phone.

Is this normal? My 12 yo visited with a friend and her parents and came home with a Gi/uniform (sorry, don't the terminology), a board she broke, and a beginner-labelled belt. Had to sign a waiver and they've sent six emails in the 36 hours since and texted me three times about signing up for a class, even once apparently getting numbers mixed up and texting me about someone else's kid. She said she had an amazing time and I was cool with signing her up, but now I'm very turned off how aggressive this place seems. Or am I overreacting?