Direct Express 200 dollars has dissapeared from my Direct Express Acct but they dont want to repay me back or be responsible for taking the correct actions.

Ive been banking with Direct Express and I have had to write up and report unauthorized transaction twice and have been denied without cause. One was a purchase in another state that i wasnt even vacant in and another was from a Tmobile acct in which tmobile took 3 duplicated withdraws. They returned one and the other 2 they claimed it never went through. But on my derect express acct it clearly shows it did take it out. So then i dispute it through Direct Express and they say its denied once again so i lost almost 200 dollars and nobody knows where it went or wants to repay it. How can that be??