CallingCards.com is KeepCalling's third transaction in the past 5 years. The first addition was TopUp.com in 2017, a service offering international mobile recharges to more than 140 countries worldwide. And the second one was Pingo.com in 2021, specialized in providing long distance calling services.(PRWeb May 25, 2022)Read the full story at https://www.prweb.com/releases/the_company_keepcalling_has_acquired_a_new_website_callingcards_com/prweb18689787.htm