..the only difference is I am in the assistant manager/supervisor role at the second year.
LOL. That's a HUGE difference. That's the difference between SKILLED and UNSKILLED. So the letter from your EMPLOYER must indicate dates and responsibilities for the first job, and the date when you assumed additional responsibilities,and then list those additional responsibilities.
I will definitely write a letter of explanation. Any suggestions on how I should write the letter!? Thanks a bunch.
If you need to explain why you have 3 different letters,/documents that's fine. But you can't write your own letter of reference Any experience you are claiming has to be in the letter written by your employer.