API limit throttled

Hi
We are a small logistics startup that has been using zoho books for the last 3 months and were happy with our choice until today. We are not getting any support and are being told not to use zoho books for the rest of the day since our API limit has been reached.

We run a batch job every month to generate bills. The bills number about 100. We use nodejs on the backend and i have used a timeout of 5 seconds between calls. We have had no issued generating these bills the last 2months but last night while running the job our API limit got reduced due to concurrent calls. I stopped running the job and requested Zoho to restore our normal API limits. Meanwhile I also sent a code sample of my zoho calls for review and feedback. But I didnt receive any reply for 10 hrs. I made a separate customer support request to restore the API limit. I was informed to wait till the next day for the API limit to get reset. Meanwhile our business has started for the day and all Zoho API calls are failing. Our business is severely affected. This is very disappointing. Please provide a solution.

Thanks
Avinash
Co-founder
Loginomic Tech Solutions Pvt Ltd.