I look forward to hearing from you

Dear Sir,
I am writing this letter in the purpose of getting for more information to know about ___________. It would be off tremendous helf if you could accept my letter.
First and foremost, there are a few things that I would like to know about some details of how much I deserve for a new position in the place of current job, because previous candidate has left his position into new one. I believe that I have proved myself a valuable achievement to the team in my crew and I would like to meet with you about being promoted to the new department. Moreover, could you suggest me that would it be beneficial for me to change my current job which I have done a number of improvements in a short period of time to the new section of the company because my aim is that I would like to be a person who improves input and output from zero to the maximum degree
In addition to this, I would appreciate if you could provide me with necessary information by saying that my previous job had a problem with luck of assistants to work with documentations. What I am going to say by this is that I have to do some work which is not related to my responsibility and I would save my time if you could make it done. Furthermore, I am also particularly interested in that I would like to get a salary bonus every month because the upcoming position requires five times challenging as my previous job.
I hope that you would take into account and accept my request in your earliest convenience.
I look forward to hearing from you,
Yours faithfully,
XXX.