Secondly, you need to improve your communication skills as it will hinder your growth anywhere if people are not able to understand what you are trying to say. Your post above is difficult to understand.
You resigned on 20th Feb with 8 days notice.
I assume your Comoany has a one month notice period. So naturally they will deduct the salary for a month
god bless you
in absence of your terms and conditions of employment it is difficult to comment.
in any case 7 days notice will not be acceptable to any company.
your appointment aspect can be seen only in the appointment order to comment.
lastly u need to improve your communication skill