Need help on inreasing api call limit

Hi, i have recently requested for increase in api call limits via email but didnt get a reply so creating a topic here instead. I need to increase it higher as Im currently a student participating a hackathon and i need to call the api to impute data over a large dataset. May i know what is that largest api call limit i can increase to? Im trying to call the api for routing and querying plannning area with lat and long coordinates

Always email to onemap[at]sla.gov.sg