Gst audit

I am currently subject to a audit in which the auditor is stating she does not believe my gst sales because i am not making industry standards. She is also basing her opinion on a google map image on my shop front showing a bench along the window with seating.

We are a business that is 90% wholesale of bread which doesn't include gst and do minimal retail sales ie less than $50k a year.

Any advice on how to handle this as she is trying to push that I am not declaring gst.