Hero Electric — Display not working on the day of delivery and asked for replacement

Address:

KrishnaSai automobile, Madinaguda, Hyderabad

Display of the bike not working on the day of delivery and Krishna Sai automobile took the bike to showroom and analysing what is the issue from 5 hours and could not find issue. When I asked what should be the process if issue not resolved to my satisfaction..surprisingly no answer from dealer...either new replacement ...I think Hero itself do not have a standard process it seems to guide dealers

Vehicle: Hero Optima CX single battery