Should I leave my PhD? I'm a PhD candidate in Industrial Engineering and currently in my fourth semester.
I passed my qualifying exam in the second semester. Till then I was a TA and I was fully funded by the department. starting from the third semester they started giving half stipend which drags me into endless financial issues in my life. I talked wih my advisor, graduate program director and the chairman, but no one exlplained me why that happened. I'm  not the only PhD student having the same issue in my department. I can't concentrate on my research and day by day I'm becoming a debtor. 

I find it very difficult to approach my advisor. When ever I wanted to meet him, I have to take an appointment and he'll give a date in a month. Once we had a research meeting and that was the only one for these two years. When I see my senior students, I feel like they are used to this way.

Should get a Master and leave the PhD?
How long do you have to run on half stipend ? How much debt will this rack up ? Do the maths and work out whether its worth it or not .How much extra income will you be able to get in industry with the PHD ? If you are just going to get a job like most people do then you really must weigh this thing up .If you want to return to the fold so to speak and become a lecturer then the PHD must be finished come hell or high water.