You are in the customer service role, much like bartenders, haridressers etc .... you are someone who spends a fair deal of time with the public, as a paid service staff member, and you choose to do the job....
dont knock them too much, they pay your wages.
Oh, and if the passengers comment that you look tired, you can bet you do look tired.... they rarely lie about how crew look
They have a right to comment, they pay as much for how we look and perform as they do the tickets, its all part of the package .... they wanna see happy, alert looking crew ..... sometimes you gotta put on the 'awake' look even when you are dog tired
it certainly is not their fault you havent had many days off, and have been working nights .... they expect the best from the crew, as that flight is the first time they have seen you .... they arent aware or concerned with what sectors you have done before their sector ......... so please dont bag them out for comments made to you .... they were probably just stating the obvious (as after all thats what SLF do best !!)
no offence meant, but you gotta be prepared to take the good with the bad with this job .... and sometimes our customers really do just need someone to listen to them .... it's all part of the service.
If they have personal comments about you, just take it on the chin --- no point whinging about it, or making smart-ar$e come-backs etc ....thats just plain unprofessional.
it will never stop.... and as they dont know you on a personal level, I cant see why you would take it to heart
so, basically, after time .... you will learn to get over it !