Cogeco Cable Inc. gained 75,989 telephony customers in 2010 for a total of 357,597, according to the company’s fourth quarter results released Thursday. High-speed Internet users grew by 44,005, for a total of 559,057 customers. The company also added 61,020 digital television customers in 2010, for a total of 559,418. But basic cable service additions are slowing, with 924 customers lost in the quarter for a total of 874,505. The company’s penetration rates increased by 4.2 per cent for high-speed Internet, 6.3 per cent for digital television, and 8.3 per cent for telephony, Cogeco said.