Our apologies for the difficulties.
You can always limit how people contact you on FT (you can, for example, receive an e-mail to the addie of your choice when you get a PM, and prevent all others than Admin or moderators on official FT business from e-mailing you).
You can (and IMO should) also forward this kind of spam to the senior moderators, any or all, or Admin, and we can take appropriate action.
We and Admin folks seen here in this forum have FT addresses that are
FTHandle <at>
mail <dot>
flyertalk <dot>
com; substitute our FT handle for "FTHandle" and "connect the dots" to use usual e-mail protocols, or use our handle to forward a PM. (Sorry for the "connect the dots" routine but none of us wishes to open our e-mails to possible spider harvests here.)