I didn't think you had any evidence, and I just smoked you out. The allegation that Christians were selling alcohol is for you to prove not a negative for me to disprove.
Clearly you can admit only to some unsubstantiated, nebulous "belief." You want to give them some un-merited benefit of the doubt, but clearly you don't understand the culture. As I said before, one merely wonders why.
As it pertains to the Muslim practice of the virtue of truthfulness, one only need travel and do business in the Middle East as I have to know a demonstrated penury of truthfulness in transactions or in matters having to do with non-Muslims is not only endorsed in practice but is quite commonplace.