Please never share confidential information like OTP number/ login password when you receive any unsolicited calls/ SMS/ e-mail/ IVR with anyone as Sundaram Finance Limited or its employees will never ask these details. Click here for July 2026 Large Defaulters List. Click here for Public Notice on Wilful Defaulters.   Centralised calls with the prefix - 1600 - from our company are official and safe: 1600 53 1013 | 1600 11 3099 | 1600 522 225.