Rajibuddin
Thank you SizeTrader.
Your suggestion is valuable to me. You are right. Actually before doing MBA, I did Hons(Major-Management- boring experience because curriculum was all about memorizing lines from book). I never liked it. But when I did MBA(Major-Finance) I loved studying. For the first time in my life I thought education is interesting and I really loved Finance. And after MBA I started teaching in college. Now I want to be a Finance Teacher in University. I love to teach Finance and I want to know more about Finance. I want to do Phd in Finance but before that I have to know more about Finance. That's why I want to do Ms in Finance first. It's not that I didn't get job. I got job in one of the leading MNCs and in few good companies but I didn't do any job. Because teaching attracted me most. I don't want to do anything what my heart doesn't support. I want to do something what I love to do. Actually, I have been teaching students(private tuition and coaching) for the last 8 years and I have now more than 2 years of teaching(Finance) experience in college. College is not a big area. It requires limited subject knowledge. There is no scope here to increase the knowledge in Finance but I am sure University teaching is totally different. There is no boundary for learning and teaching. The more I can learn and teach the more I become satisfied. I can't survive without teaching. It's in my blood. So, please suggest me now what I should do.
You are welcome. You bring up two key points though: you want to do a PhD and you want to teach. The former explains why you are trying to sharpen your quantitative skills. The latter explains your dissatisfaction with the MBA.
If you want to do a PhD, I wouldn't be trying to go to an MSF first. Take some math and stat classes. Do
really well at them. Then apply widely to PhD programs. I'd apply to at least 30 and probably over 60 places. Getting into a PhD program is far harder than getting into an MSF program. You could use a masters program as a backup, but if you are going to do that it should address your weakness (so an MS in math, OR, or stats). Even then, you need to accept that you might not end up in a PhD program.
On the other hand, you want to teach. Because this is such a strong focus, I would apply to PhD programs outside the top 50. Most schools in the top 50 (and many in the top 100) won't touch someone whose focus is not research -- and entering quals at one of those schools with nobody thinking they can/want to do research with you... you're toast 99 times out of 100, regardless of how you do on the test.