MTN Rwanda subscribers yesterday morning could not receive or make phone calls for close to three hours due to network failure suffered by the company.The network was later reinstalled but not before complaints started flying among members of the public on social media."We had a failure on one of our nodes that affected some customers.  Not the whole subscriber base was affected. We sincerely apologise for all inconveniences caused,” David Kezio-Musoke, the Public Relations officer at MTN Rwanda told The New Times."We started receiving complaints at about 10am today [yesterday] morning from some customers through our call centre and on social media. Our engineers started working on the problem as soon as we were notified.”As to whether the problem was solved temporarily or permanently, Kezio-Musoke said that the particular issue has been resolved. He however added that, "We operate in an industry that uses a lot of different technologies, which means there will always be technical failures.”