CIC reject AOE because of low IELTS score??

Dear All
should i Appeal or challenge this Letter in Canadian Federal court while my application in In Process someone told me that you can not go to court until you have got refusal but your file is still in process you must contect with visa office but in other hand i have seen many people who got visa on 5 overall band then why not me?

my points

Education 22
exp. 21
age 10
AEO 10
Ielts 06 L 5 R 5 W 4.5 S 6 Overall band score 5
Adb. 09

total points 78

Dear Mr.

I am now completing the assessment of your application for a permanent resident visa. It appears that you may not meet the requirements for
immigration to Canada.

Section 82 of Canada's Immigration and Refugee Protection Regulations states concerning arranged employment:

"Ten points shall be awarded to a skilled worker for arranged employment in Canada in an occupation that is listed in Skill Type 0 Management
Occupations or Skill Level A or B of the National Occupational Classification matrix if they are able to perform and are likely to accept and carry out the
employment."

The occupation for which you have obtained an Arranged Employment Opinion (AEO) is that of Drafting Technologist/Draftsperson, identified in the
National Occupation Classification (NOC) by the code 2253. Among the duties and responsibilities identified by your prospective employer for the job
being offered to you are: "Develop and prepare engineering designs and drawings from preliminary concepts, develop and prepare design sketches,
complete documentation packages and produce drawing sets, check and verify design drawings to conform to specifications and design data, write technical reports, prepare contracts and tender documents, prepare construction specifications, costs and material estimates."

English is identified on the AEO as the required language of your prospective employment. You have provided an IELTS test report form which indicates that you have moderate proficiency in English speaking and reading, and basic proficiency in English listening and writing. The job being offered to you requires you to be able to develop designs and drawings from other information as well as to complete documentation packages, write reports, and prepare contracts and cost and material estimates. Where it appears reasonable to expect that clear communication and understanding would be
necessary for efficient business operations, the ability to communicate in English at only a basic or moderate level appears to be a serious impediment
to your being able to perform the duties of the job offered to you in Canada.

As it appears that you may not have the English language proficiency which would enable you to carry out the possible employment in Canada, you
consequently do not appear to satisfy the conditions in Regulation 82 for obtaining points in the factor of arranged employment.

Before I make a final decision, you may submit additional information relating to this assessment. You must provide any additional information
within sixty days from the date of this letter. If you choose not to respond with additional information I will make my decision based on the information
before me, which may result in the refusal of your application.

Sincerely,

EFL
Immigration Section/Service d'immigration
High Commission of Canada/Haut-commissariat du Canada
1 Grosvenor Square
London W1K 4AB/Londres W1K 4AB
United Kingdom/Royaume-Uni
Telephone/Telephone 0207 2586600
Facsimile/Telecopieur 0207 2586506
Government of Canada/Gouvernement du Canada