Mandatory social service in Colombia

First I want to introduce myself: I am a general physician from Bogotá, Colombia, I am 24 years old and I finished my bachelor degree on in June of last year. (can I said say that I had my commencement ceremony ? )
In my country after one obtains the bachelor diplomma diploma as general physician one must do something called" mandatory social service" it consists of one year working as general physician in rural areas (less favored areas) in order to get your license to practice medicine anywhere you want in the country. However it comes with several problems:

You should must inscribe enter yourself in a national raffle in which you participate are chosen for one of the places (the use of the word places is OK, but the word 'positions' is better) that is already approved by the health ministery with for this purpose. The hospitals interested in having a physician doing the mandatory social service year, must go to the regional health secretary and show some documents documentation supporting (the use of the word supporting is OK, but the better word would be 'demonstrating' )issues (I would use the word criteria here instead of 'issues' as the word criteria is exactly what the following words are describing) such as: purpose, target population,economic resources ( to assure they can pay the doctor) and rights and obligations of the person working there.

There is a lot of corruption. The regional scretaries secretaries approve those places even when the workday exceeds 12 hours (legally allowed 8 hours/day) without any compensation. Some people work 250-270 hours/ month with really low wages: 500-1000 USD/monthly.

A lot of general physicians accept this these conditions and start to work right away after their graduation, while others do not. However, there are consequences for not accepting the conditions. When you inscribe enter yourself into the raffle and you, due to the conditions of the place to which you are assigned, reject it, you get sanctioned. The sanction consists of not letting you to work in any other public place that is part of the raffle ( so it means almost all of the places available in the country) for six months.

Excellent job. You are a very strong writer. 

Mandatory social service in Colombia

First I want to introduce myself: I am a general physician from Bogotá, Colombia, I am 24 years old and I finished my bachelor degree on June last year. (can I said I had my commencement ceremony ? )  YES usually we say I finished my bachelor degree (as you just did) or I graduated from college last June

In my country after one obtains the bachelor diploma as a general physician one must do something called" mandatory social service".  It consists of one year working as a general physician in rural areas (less favored areas) in order to get your license to practice medicine anywhere you want in the country. However it comes/there are with several problems:

You should register yourself in a national lottery in which you participate for one of the places that is already approved by the health ministery for this purpose. The hospitals interested in having a physician doing the mandatory social service year must go to the regional health secretary and show some documents regarding issues such as: purpose, target population,economic resources ( to assure they can pay the doctor) and rights and obligations of the person working there.

There is a lot of corruption. The regional scretaries approve those places even when the workday exceeds 12 hours (legally allowed 8 hours/day) without any compensation. Some people work 250-270 hours/ month with really low wages: 500-1000 USD/monthly.

A lot of general physicians accept these conditions and start to work right away after their graduation, others do not, the consequences come when you do not. Whrn you register in the lottery and you, due to the conditions of the place that was assigned to you, reject it, you get sanctioned ; the sanction consists of not letting you to work in any other public place that is part of the raffle ( so it means almost all of the places available in the country) for six months.

Como hacen esto? ¿Es la escuela "gratis"?