The consequences of resignation during the probation period

I joined a hospital as an office staff a month ago and have been working for one month. Now I am under a probation period which is for 6 months. I am on a husband's visa and did not take any facilities such as medical insurance, accommodation, or visa.

I am not comfortable with the work atmosphere and would like to resign from there.

What will be the financial and legal consequences?

I heard they normally charge 45 days salary and a ban is imposed even under probation period.

What should I do to terminate the contract?