The Cingular born in October 2000 was a Frankensteinian patchwork of a company, sporting 60 call centers, 11 billing systems and the leftover IT systems of several legacy acquisitions. Formed from the merger of SBC and BellSouth's wireless units, the newborn company was still dealing with the aftermath of even earlier mergers, such as the absorption of SNET, PacBell Wireless, Cellular One and Comcast Cellular into SBC.