Dear member,
If you are BHA, then rather than taking short courses on Admin, you may do MHA. That will add real value to your CV.
When did you complete your BHA? Have you started working or are you looking for a job? If you have started working, then you may learn as you earn. Watch your seniors carefully. Find out how they carry themselves, how they solve workplace problems.
Secondly, identify the causes of customer dissatisfaction. Find out what could have been done better to prevent dissatisfaction. Note the instances and make an exhaustive list of customer dissatisfaction.
Thirdly, various training companies organize public workshops on subjects like communication skills, team building, leadership, etc. Take these courses on your own. Do not wait for your company to nominate you.
Fourthly, stay connected with the textbooks of your academic course. Watch carefully the instances that keep on happening around you and relate those to the theory that you had learned during your academic course.
Lastly, improve your English. Improve your written as well as spoken English. For this, you don't have to join some school for spoken language. You may read an English newspaper and improve your vocabulary. Communicate in English with your colleagues or customers.
All the best!
Dinesh Divekar