What age did you get your Chinchilla?

I'm getting a chin soon, already paid for. My cage has been set up for weeks now. I see a lot of people posting on here how they got their chinchilla at 7 weeks old, well mine has to be 4 months old before I can take him home. What is the purpose of this? He's from a breeder, I'm not impatient on waiting if that's what it takes for me to get him, but I am a little confused why other people get them so young yet I have to wait till he's WAY older. Any input? And do you still think he will bond with me even though he is a bit older? To be honest I'm starting to think maybe I got scammed because the breeder has not had very good communication with me since I purchased him. I saw she had an account on here and I did some other research on her before I bought my chin but I'm still having doubts now 😣 I hope I get him, but even if I don't, I'll find another chinchilla buddy to take home. Sorry, went on a rant there.