DUBAI: Vodafone Qatar plans to cut its workforce by a tenth, it said on Tuesday, as it reported a sixth straight widening quarterly loss citing competition and waning international call usage.

The Vodafone Group affiliate has yet to make a quarterly net profit since ending state-controlled Ooredoo’s domestic monopoly in 2009, but appeared close to breaking even in mid-2014.

Since then, however, Ooredoo has fought back, cutting prices to woo back customers and defend its market share.

Vodafone Qatarí’s fourth-quarter loss nearly tripled from a year earlier to 180 million riyals ($49.5 million) for the three months to March 31 versus 66 million a year earlier.

Vodafone Qatar’s financial year starts on April 1. The company’s net loss for the 2015-16 financial year was 465.7 million riyals versus 215.8 million the previous year.

Mobile average revenue per user (ARPU), a key industry metric, for the 12 months to March 31 fell 13 percent to 107 riyals.

In Tuesday’s bourse statement the company also announced that Sheikh Khalid bin Thani Al-Thani had quit as chairman due to other work commitments. Rashid Al-Naimi has been appointed acting chairman.