Tigo Rwanda has seeded Tongai Maramba, currently chief commercial officer, to succeed Diego Camberos as general manager, the telecom firm has announced.Tongai will take up the role on October 7, while Camberos will move to Dakar as the new general manager for Senegal."I am delighted that we have been able to appoint someone as talented as Tongai for this important role in Rwanda. The country’s economy is growing fast and so is the number of our customers,” Arthur Bastings, the Millicom International Cellular, Tigo’s parent firm, executive vice-president for Africa, said in a statement. He added that over two million people use the telecom services in Rwanda, while an increasing proportion is also using Tigo Cash. "There are great opportunities ahead and I know Tongai will be an inspiring leader of the great team we have in Rwanda,” he noted.Tongai has been been lauded for growing Tigo Cash from a concept to making it a market leader within two years.  Bastings said Tigo Cash was now recognised by the GSMA, the global telecoms industry group, among the top five fastest-growing MFS businesses in the world.