I agree with the above, if you still feel that it warrants it report the PSN ID using the link provided above.
However I should say that it's unlikely that anything will be done about this because it'll be your waord against theirs, as hard as it may be for some, personally I would try to ignore it & move on.
Customer Service - 1-800-345-SONY (7669)
Account & billing Support -1-877-971-SONY (7669)
Available Mon to Fri 8am - 8pm PST