Hi Munny,
You have not mentioned your specialization in MBA. Anyway, if you are HR specialized, you can go for diploma courses provided by different universities in HR subjects such as diploma in labor laws, diploma in human resource development, etc.
Alternatively, if you are specialized in MBA finance, consider pursuing a diploma from the Institute of Banking and Finance. Another option is to go for a CS program. These are the options I can suggest.
Regards,
Narayan