qualified audit from the Auditor-General following a large number of billing issues, as the result of the flawed implementation of a SAP system. The city's call centre also experienced a crisis at the same time, with staff refusing to work. Geography The municipality covers an area of , stretching from Orange Farm in the south to Midrand in the north, and contains two big urban centres, Johannesburg and Midrand, and nine more smaller urban centres, namely Roodepoort, Diepsloot, Killarney, Melrose Arch, Randburg, Rosebank, Sandton, Soweto, and Sunninghill. Main places The 2011 census divided the municipality into the following main places (unchanged from the 2001 census): Government Each province determines the structure of local government in its region. Gauteng province, run by the African National Congress, has opted for a Mayor–council government. The first Mayor of Johannesburg was Amos Mosondo since the establishment of the current structure. Regions The administration of the City of Johannesburg Metropolitan Municipality was decentralised initially into eleven regions, named simply Region 1 to Region 11, which were largely unrelated to the 11 former apartheid administrations. The new numbered regions were subsequently consolidated, in the summer of 2006, to seven regions named Region A to Region G. The current regions are: Region A - Diepsloot, Midrand and Ivory Park (previously Regions 1 and 2) Region B - Northcliff and parts of Sandton and Rosebank (previously Region 4 and parts of Region 3) Region C - Roodepoort (previously, Region 5) Region D - Soweto, Doornkop, Diepkloof and Meadowlands (previously Regions 6 and 10) Region E - Alexandra and parts of Sandton and Rosebank (previously Region 7 and parts of Region 3) Region F - inner city and Johannesburg South (previously Regions 8 and 9) Region G - Ennerdale, Orange Farm, Lenasia, Eldorado Park and Protea. (previously Region 11) Each region is operationally responsible for the delivery of health care, housing, sports and recreation, libraries, social development, and other local community-based services, and each region has a People's Centre where any city-related transaction can be dealt with. Residents can lodge complaints, report service problems, and perform council-related business more quickly. Changes to the previous city structure After the end of apartheid allowed the consideration of the entire city of Johannesburg as one without consideration of race, it was determined that the previous structure of the city was wasteful and that there was much duplication of functions. Furthermore, some suburbs