谁让你苦等无望
[shéi ràng nĭ kŭ dĕng wú wàng]
'Whose Fault Is It That You Wait in Vain' sounds somewhat melancholy or resentful. This may express frustration at being kept waiting for something or someone, possibly feeling let down. It suggests the person is tired of waiting and not getting any results, maybe feeling abandoned or overlooked.