Chi 1K, I understand it is sad that they don't answer your messages. Maybe they will eventually answer. We don't know why they did the DNA.
I stumble across an ad for free health screening for children (Sam's Club, maybe) the other day that included a DNA test kit. I am not quite sure why they were including the kit but I assumed it was to have the DNA on file in case the child goes missing. BTW, the kit was free but the parents had to pay to have the results tested.