You now have one or two choices. If you are serious about a career as a trainer in the NGO field, given the fact that you have some experience, you will do well to immediately enroll in the part-time BBA course, which will give you the flexibility to continue in your job, or even work as a freelancer. However, you must complete the BBA course and then take up the Master's Degree In Social Work, which is now available in so many colleges, as an evening course, starting at around 2 PM. You can specialize in what is called Community Development, and with your experience, you can easily find jobs with many institutions in the NGO sector, where there is a need to train the personnel in various aspects of Management and soft skills.
Of course, you also have another option. Do the BBA course part-time, or even through correspondence, and then pursue a good MBA either from one of the good IIMs or from the best college in your city. Needless to add, the standards of the CAT examination and the group discussion and even the interview, to get a seat in IIM, is very tough. Prepare very well, and even join a coaching institute. There are some thirty colleges for MBA, apart from the IIMs, and these have good standards too. Details of the same can be found in some many replies in this very same website itself.
A totally different option would be to do in for a career in say, event management, as there is huge scope, after your BBA. The nature of the job, and the salary will totally change for the better. But you should be passionate about it, and be willing to work for several hours. If you give some more idea of the actual work you do, and what you are passionate about, I can counsel you far better. The BCA course is best avoided, as the jobs in IT would soon reach a saturation point. Instead, as a trainer after BBA, you can still make a good career.
All the very best.