Since 1998 the Millicom subsidiary of Sentel has provided mobile telephony services under the brand name "Tigo" in Senegal. Sentel’s 20-year operating license was issued prior to the 2002 enactment of Senegal's Telecommunications Act. In 2008, several high-ranking government officials, including presidential counsellor Thierno Ousmane Sy and the former President’s son, Minister of Infrastructure Karim Wade, reportedly demanded USD 200 million from Millicom to let the company continue to operate in Senegal. Millicom agreed to negotiate license enhancements but refused to pay for a license it claimed to already own. In Autumn 2008, the Senegalese government revoked Millicom’s operating license. In August 2012, Millicom and Senegal settled their dispute, ending the four-year legal battle. The government agreed to recognise the validity of Millicom’s existing license and agreed to additional concessions and new services.