I wouldn't bother emailing companies unless you specifically want something in writing. Worked in support for the last 5-6 years and emails get overlooked all the time.
I bought my 901 second hand and it didn't come with straps (already had the backpanel with it). I call and asked if they could help. They didn't have the straps as a separate item but they offered to make me a set from scratch! Seriously, give them a call if you can they're good people.