So I decided to sell some of the kids uniforms in this parent group (admin makes it for the school parents only).  
 

Supposedly mostly all of these parents at this school are upper/high class. 
 

However today I question this. 
 

The lady who purchased my uniforms offered to digital payment me the money for it. I typically don't do digital payment unless I know the people but since she was in the parent group, said she was a teacher at the school, etc I trusted her a bit more than the typical buyers. 

Well maybe times are hard for some people idk but the lady pulls up in a brand new suv, and I'm thinking she's going to digital payment me as it exchanges hands but she's like "oh my husband is going to digital payment you" makes small talk then leaves. 

Afterwards I start to get irritated that this lady thinks she's so entitled she can come collect items and not pay or have her husband pay no later than at the time of the transaction PLUS she lays this detail on me at the pickup / last minute. 

Her a$$ wouldn't dare traipse into Lululemons and expect to take home some items without paying so what makes her think this is acceptable behavior?

When should I reach out to her to request her husband or whoever digital payment for the items (because I don't want them to "forget") ... so I don't have to virtually drag her in front of the parent group online for not paying.