Billing Services Group Limited announced the repayment of $2.4 million of its senior debt made on June 30, 2015. Accordingly, at the close of business on June 30, 2015, total outstanding senior debt was $1.5 million. The company has amended its credit agreement and extended the maturity date of its senior debt to September 30, 2015, and expects to make a payment of $0.5 million at each month end of July, August and September.