Aptech Computer Education — got some other certificate

Address: Mumbai City, Maharashtra, 400010

I have done the course of ORACLE which includes 4 modules from the aptech computer education mazgaon (Mumbai).after finishing the course I would have got 4 certificates of ORACLE but when i got my certificate, it was some another course certificate written as 'Data management (SQL server).I approached to the head of institute too but he told me that this certificate includes all 4 modules which you have done but in reality this certificate is of some other course. Please help me out from this situation as much as fast. I belong to the middle class family. the certificate I got costs only 7, 000 - 11, 000 where as the ORACLE course which I have done costs 60, 000 (4 modules).