Jumbo Jobs - Refund denied by job portal

I am an Indian resident working in Lagos, Nigeria.
On April **, **** - Mr Akshay (+** ** **** ****/****/****), representing as Senior Recruitment Manager of jumbo-jobs.com (a division of Global Executive Solution) called me on my mobile for sharing * job opportunities in United Arab Emirates (UAE). He explained to me that jumbo-jobs.com would charge me USD **** for the service. Of this, USD *** is to be paid upfront as registration.
Based on his commitment, I made a bank transfer of Rs **,*** (equivalent to USD ***) from my HDFC bank account to Axis Bank Account named Global Executive Solutions (A/c No *************** - Ground Flr, Welcome Court Complex, Opp. Railway Degree College, Tarnaka Branch, Hyderabad ******).
As per the email sent to me by Mr Akshay, it was agreed that if I am not satisfied with the services I can opt for a refund within ** days. On payment of the fee of Rs **,*** - I have received an e-mail from cr@jumbo-jobs.com stating that I have been offered the following service:

Customized Recruitment Service: A dedicated SPOC will facilitate with opportunities, feedbacks and interview schedules. The SPOC will provide weekly once update call to discuss the progress and to share the feedback.

However, after * days of paying the fees on April **, I have not received any feedback or calls from any SPOC nor I have been informed about who is the SPOC. Also, my email to info@jumbo-jobs.com has also bounced. Hence, I e-mailed Mr Akshay and told him that there is no development from their team’s end. After that, I have received a couple of more opportunities by April **.

Again there has been no response for next full week and since the period of ** days was approaching, I have e-mailed Mr Akshay on * May that I am not satisfied with the response and service and would like a refund. On * May, Mr Akshay has e-mailed me stating reasons that the client to whom profile is sent is delaying and jumbo jobs cannot do anything about it. Also, he has refused a refund and stated that I should not be unsatisfied within ** days. I have made an international call to Mr Akshay and we have mutually agreed to increase the trial period to ** days.
I wanted to give an opportunity to jumbo-jobs and see if really there will be any breakthrough. However, the same situation has continued. Except for one more job application, they have not done anything and nor provided me with feedback on *-* jobs which they applied for earlier.

On one hand, they have charged Rs **,*** stating it as customized recruitment service and on another hand, nobody from jumbo jobs has given a status on what happened to *-* applied jobs nor on their own have jumbo jobs contacted me for new job opportunities.

Having decided to come out of this, I have again requested a refund on e-mail to Mr Akshay on ** May ****. However, instead of giving the refund, he has plainly blamed me and stated that it is management call whether to give a refund or not.

Now the situation is that they are not responding to my e-mail. I am very sure that jumbo-jobs is another fraud job portal like wisdom jobs. They are just taking registration fees under the pretext of customized recruitment services and cheating people in need like me.

Between April ** to May **, they have even changed their physical address mentioned on the website.