You can contact Airtel Broadband Customer care for Choosing Fiber Plans, Raising Fiber complaints and queries. Airtel Broadband customer care number 121 is toll-free. Airtel Broadband Customer Care nodal offices Airtel is a Bharti Enterprises organization engaged in providing services such as GSM Based Mobile Services, Landline Services, Internet Services for Homes as well as large & dedicated bandwidth based Internet Services for Corporates. Here is a detailed overview on all the different ways to get in touch with Airtel customer support for a quick resolution! Facing issues with your Airtel Broadband or Xstream Fiber? Here’s the complete list of Airtel broadband customer care numbers, toll-free helplines, regional contacts, nodal officers, and appellate authority details to help you resolve complaints quickly. Official Airtel Support: Airtel Broadband Customer Care.