- Improves and unifies top up experience across all channels- New features include scheduled top ups and gifting optionsDUNDALK and DUBLIN, Ireland — 01 June 2010 — Vesta Corporation, a global leader in electronic payment solutions, today announced that it has expanded its contract with mobile operator Telefonica O2 to manage all of its electronic top up transactions for prepaid customers. Vesta's European headquarters in Dundalk has managed phone-based and SMS top-ups for the operator...