Parivahan — not accepting two application with single transaction number [protected]

Address:	100 100 Pudhur Road, Peelamedu, Tamil Nadu 641004, Coimbatore, Tamil Nadu, 641004
Website:	sarathi.parivahan.gov.in

I have applied for these two services in coimbatore south rto,
1 change of address in dl
2 issue international driving permit
When i appeared for interview they were telling me that we cannot accept this application because two services are in same transaction number, they want me to apply seperately. They simply asking me to cancel the application, but i cannot get refund. If that was the case why your website allowing me to book two services on single transaction number??? Now i have paid the fees, and if cannot get the refund means, whose fault is this??? Its my hard earned money, and simply you are telling to cancel it for your mistake.