I hope you are good.
Response from sunfieldmusic.com
That is correct. The page from which you purchased shows a custom build time of 10-21 days, followed by the 5-15 business days for shipping.
If you check your tracking you will see your package is on the way and will more than likely be there within a week.
Sorry for any confusion and we apologize for the delay.
Thank you for your patience,