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Subscription billing for 4.5 million customers

Cologne-based telecommunications provider congstar offers prepaid and postpaid mobile communications products as well as DSL and VDSL complete lines. Since its market launch in 2007, congstar has owed its success to the combination of outstanding D-network quality, low prices, and flexible contract terms. More than 4.5 million customers now benefit from this.

Since 2010, nexnet has been working as a subscription billing specialist for congstar. Responsibilities include rating & billing of all basic charges, all communication and IP connections, and all purchases in the congstar online stores. The accounts receivable and receivables management of congstar GmbH, as well as the commercial dunning process for postal and prepaid customers, is also handled by nexnet.

nexnet provides congstar with detailed reporting for all processes so that numerous analyses and evaluations can be carried out.

Since nexnet took over subscription billing and accounts receivable management, numerous enhancements have been made to the system and interfaces. For example, the innovative rates “congstar wie ich will” (congstar as I want), where customers can configure their own individual rate using sliders, or the Fair Flat, where customers only have to pay for the data volume they actually use, are also mapped and billed via nexnet. nexnet operates its own data centers in Germany and meets all requirements of the DSGVO: Subscription Billing in BPO – Made in Germany!

congstar - Subscription billing for 4.5 million customers
Low prices and flexible contract terms with congstar

About congstar:
Cologne-based telecommunications provider congstar offers prepaid and postpaid mobile communications products as well as DSL and VDSL complete lines. Since its market launch in 2007, congstar has owed its success to the combination of outstanding D-network quality, low prices, and flexible contract terms. More than 4 million customers now benefit from this. congstar products and services regularly receive awards. In October 2018, congstar received the Handelsblatt quality seal “Brand of the Year 2018” in the mobile communications and telecommunications category. Focus Money awarded congstar the “Fairest Mobile Service Provider” seal from 2012 to 2019. Readers of Europe’s leading telecommunications trade magazine connect voted congstar “Mobile Service Provider of the Year” for the seventh time in a row in 2018. congstar products can be ordered via www.congstar.de or the order hotline at 0221 79700700 (Monday to Saturday from 08:00 to 22:00, Sunday from 09:00 to 18:00) as well as in Telekom Shops and at selected retail partners. congstar has been a mobile communications partner of REWE Group since 2012 and is the technical service provider for ja! mobil and Penny Mobil. congstar makes a contribution to environmental protection by working in a CO2-neutral manner at its company site. Since July 2014, congstar has been back in the 2nd Bundesliga as the main sponsor of FC St. Pauli. This is a continuation of a joint success story; congstar was already a sponsor of FC St. Pauli from 2007 to 2009.

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Stephanie Timm
Stephanie Timm

Seit rund 3 Jahren Redakteurin und Content Creator bei nexnet GmbH. Geschult in den Themen Billing, Payment und Finanzmanagement recherchiert und verfasst sie Texte, die dem Leser nicht nur die spannende Welt von Billing, Debitorenmanagement, Payment Clearing und Co. näherbringen, sondern sie berichtet auch über Änderungen zu den Regularien in diesen Bereichen.