I recently ordered an exhaust from them (July 4th, and yes it said it would be 11 days to ship from factory) but I emailed them because I forgot to put the 10% off sale code into my order.
I got a response in less than 48 hours but instead of addressing the 10% off code, the person who responded gave me an estimated delivery date (august, which I'm okay with) and apologized for the time frame and offered to put my money towards a different exhaust... to which I replied "i'm just here for the coupon, i'm fine with the wait".
I got an email back in less than an hour for that one apologizing for not reading my email, making assumptions, and confirmation that I'd get the 10% refunded to my bank. Sure enough, it happened.
Can't wait to get my exhaust in August! Thanks Covid!
(I wrote all of that to say you catch move sales with honey than you do with complaining and non stop emails)