How to save my videos??

Ive spent weeks recording my training course for my member area.

3-4 hours of video explanations.

Spent weeks editing them.

Now i found that everything is so screwed im so confused.

Im not naming the software i use here as its not a rant nor is it a review.

I want to find a solution.

So my problems with it are the following.

1. After recording, timeline of audio and video are in sync, after viewing using the play and pause button, the audio and video de-sync.
Suddenly one timeline becomes longer than the other.

2. when i edit or delete a range of audio/video that i dont want.
Part of it is still there when i play back. So i deleted the range and it was 5 seconds worth in my timeline.
But when i press play HALF of the deleted range is still in there. So i dont know what 5 seconds was actually deleted.

All in all while viewing my project in edit mode, i have no idea whether what im viewing is what the actual data is.
1 hint is that the audio has this thing that shows whether there is sound right, if there is no sound it will go ----------. But in those times there were audio, and those time where it shows volume but there was not suppose to have audio and it was a pause.

So it becomes impossible to edit!
And now im at a lost.

I am thinking the only options i have are
1. Try to save as much of my original video and outsource it to some professional.

2. Start all over again in the recording!

Damn, im loosing my hair becos of this!!