Thing gone wrong

This is sad I just realized that my money gone from my saving book, I am not kidding as I not notice it earlier but now I realized that part of my money missing from banking saving account. It is Maybank that I am using and I often use this for working time and the salary will goes this account. My dear found out and told me to ask my dad opinion.

My dad told me to close the account and open another account at another branch. I don't know if this problem will solve like that. It happen once a year in my saving account that a large amount money will go into my account then same day large money amount withdraw and it will be more than the exact amount that go in my account. I know my limit and I don't have that much money in account but someone is illegal using my account. I need to go bank tomorrow morning, my dad advice me to take withdraw my money out and left just $10 inside. So the person that want to cheat my money cannot get my money. My dear knows of this matter and I told him what my dad advice but then he says that is not the answer he wants, he wants to know what happen to my money in account why suddenly a large amount in account then in same day that money gone and even part of my money with it.