Maxima 2010 , the engine shuts down while driving?

My Maxima 2010 for the past two month it
started this issue which driving me crazy. The
engine shuts off while driving regardless for
the speed. The breaks works fine the steering
becomes heavy to turn, all the lights turn on
(engine light, breaks light, ebs, oil light, etc) if
i turned off the car and turn on the issue
appear randomly sometime it right a way
shuts off but sometimes after and hour or
more . I have already paid a workshop and he
did change a lot of things and paid a lot of
money but after I receive the car from them
the issue still there. I have seen some of the
subjects here discussing the same issue but
nobody said that they have found the
solution. Could anyone help me for what can
I do ?