RTO India — Sarathi Parivahan DL Test slot change

Address:

Chennai

I have booked a test slot for DL test via sarathi parivaahan and trying to change the date. When I enter my application number, DoB it fetches the entry and when i cancel it says could not cancel. I have even tried to email Sarathi helpdesk but they just say use the same option which is not working.
Application number - [protected]