You were a life saver (or actually, a $-drain-cleaning saver) tried the hot water/salt first but it didn't seem to do much so i tried the baking soda/vinegar and, amazingly, the sink started draining! thank you so much for posting this! We all run into plumbing problems, almost always when we don’t expect them! if you have been caught by surprise by a blocked sink or a leaky tap then you need an emergency plumber service now! it’s always good to know that a professional.