hello

1/4/ tank of gas car drive ok, 1/2 tank of gas stalls

bought the car used last year, the car hestitate and wants to shut off , thought It was fuel pump or system,,I am not expert, but did routine stuff like cleaners and injector spray..now current vacuum hoses break..replaced all vacuum hoses car starts then idles down, shuts off..its annoying and frustrating. then when all gets bad, battery start to run down to point where I have to jump start...just need simple answer or fix or get my money back...for a sh*tty car...whats the solution VW.. ?