Hi Tejas,
1. Please do not panic and most importantly loose hopes for securing a better career.
2. First of all you have a good educational background which is most suitable for joining any reputed company in India. (Rather in Pune, Mumbai).
3. Please do not go for these unauthorized training institutes. And also do not opt for any experience letter for which you don't have any experience. All the companies do a background check for your education and employment and if found fake, they simply reject the candidature.
4. Go for an authorizaed SAP eduction partner and with your MBA in Operations SAP MM module is a best fit for you. Whatever the education partner says, stick to what you want and go for the certification. I know the amount is quite high but I am sure you will found a suitable option after the course.
5. If you are working now, do not leave the job till you complete your course and certification and find a suitable job.
Good luck for the future and always go with your inner instincts.
Hope this will be useful
Thanks and Regards
DJ