SYDNEY (Reuters) -Some customers of Australia's Afterpay have been asked to close buy-now-pay-later accounts to qualify for a mortgage and offered a credit card upon qualification, the BNPL provider said on Tuesday, underscoring fierce competition in the consumer finance sub-sectors. BNPL loans, on-the-spot interest-free short-term loans with minimal credit checks, exploded as an alternative for younger shoppers after the COVID-19 lockdowns and stimulus payments spurred an online shopping frenzy. In a survey of 1,000 of its customers, Afterpay said more than 10% reported being offered a credit card by the same bank or mortgage broker that told them to close their BNPL account to qualify for a loan, without specifying which banks or brokers.