I know this too well.
A colleague whom I'd covered their ROM first gave me their opinion that they find my photos 'wonderful', 'very nice', 'excellent'.
But when their AD came, the same colleague approached me and asked me if I knew of any CHEAP lobangs (the keyword is 'cheap') and maybe thru me I can perhaps get some 'special friendship rates' for his AD. When asked, he gave the excuse, "Aiyah, my wife wants Pro one. U know? Those got shop one. Those are the Pros."
I'm just sitting paitently and waiting for their AD, since their photographer is a Malaysian... If the AD photographer KENA at the causeway... ho, ho, ho....