im worry to leave my 5 mo Infant with helper

Hi, ive been melted down so many times, as i had my 2nd try helper and she still cant be trusted. Im still at home for my maternity, but will be back to work soon in 1 month time. I found many many times my helper lied , not clean, did something i said no to my baby, etc. Everytime she did it.. i will talked to her what i dont like abt it. Then she understood. But she will repeat it with some innocent face. This is my 2nd helper in 4 months. And im sick of the thought have to change and go through the same again with my new helper if i decide to change to another one. I did consider infant care. But i dont know much about it. Please helpp meee any advice will be super helpful!