I have a similar situation as what you have...Im already here for more than a month yet unemployed...I strongly agree its not with the communications skills because based on my experienced I had an interview wherein I can't really analyzed the interviewer's question asked due to the fact that the accent was so stiff and the incorrect grammar made my nose bleed...

I felt that he was disappointed and unease with me since I am always asking "can you kindly repeat" "pardon me Sir"...later I realized I should pace my way of communicating with the interviewer since Im the applicant but believe me understanding the interviewer was really a tough one...anyway thats a lesson for me to learn...

This is not to offend any HR peeps who might read this...I guess my experience was once in a lifetime....in everything happened there always be a purpose...

Be optimistic you're surely find the right and best job for you...its a matter of time and patience...:)