 Reconfirming All 2021 Financial Guidance Targets Q1 2021 Revenue Growth up 3.1 Year-Over-Year; Best Quarterly Organic Result since Q3 2019Continued Commitment to Shareholder Remuneration with 15 Million Returned in Q1 2021Denver, Colorado--Newsfile Corp. - May 5, 2021 - CSG NASDAQ: CSGS, the trusted partner to simplify the complexity of business transformation in the digital age, today reported results for the quarter ended March 31, 2021. Financial Results: First quarter 2021 financial results: Total revenue... 