Really bad Experience with a buyer

[haris_hassan]

I recently had a very bad experience with a buyer. I am giving away free custom design, free unlimited revisions, free source file in my $5 resume making gig. a buyer asked me to convert her CV from two page to one page and instead of choosing from my portfolio samples, send three samples pictures and told to choose any of them to make. i choose one that was suitable for her lengthy education section. i attached pdf of that sample in messgae to her and then she asked for editable word format (which is free). after i delivered, she asked for other design alongwith editable file as modification.
It wasn’t enough, i had clearly written about proofreading and see for any mistake in CV before ordering. but when i had made her second design of resume, she started to add more stuff in Resume that was not in her rough resume she send previously.
She was complete waste of time for me but yet i fulfilled her all demands.
Is there any way, we can avoid this situation? suggestion please.

[haris_hassan]

I’ll really appreciate any advice from experts.
Thanks