You must be new to the world of sending emails about this to Tesla. I went back and looked at all the referral question emails that I've ever sent, and how long it took to get a response. Most of the time I already had an answer from somewhere else or had forgotten that I had even sent the email in the first place by the time they responded... Anyway, here's the sent/response list:
My email sent: July 17, 2017. First response from Referral people (Beyond automated email saying "we got your email"): Sept 8th, 2017.
My second mail: June 28th, 2018. Response from Tesla : August 15th, 2018.
My third email (different topic then 2nd email): Sent July 23rd, 2018. Response to this email received Aug 23rd, 2018.
4th email sent Feb 24th, 2019. Got a response from Tesla on March 7th, (new record!)
5th Email sent April 2nd, got a response April 18th.
So basically the minimum time to get back to you, and it is improving, is about 2 weeks. On average though it takes 4-6 weeks to get a response. You sent your first email only 3 weeks ago, so just be patient.
I'M NOT SAYING THIS IS A GOOD THING, but it's the way things are. In a perfect world they would get back to us in under a week. But we don't live in a perfect world.