未付款项转给一家收账代理商。

Missed payments are referred to a collection agency.

《柯林斯英汉双解大词典》

他们会把暂时交不起钱的病人放在一边，由收账代理商来向病人收取费用。

Because of this they tend to turn in patients that don't have the money to collection agencies.

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当你没钱支付医生的诊疗费时，为了避免收账代理商来要钱，你就很容易透支信用卡来交这些费用，甚至会借贷款来交费。

When you don't have the money to pay for your doctor visit it can be easy to put the bill on a credit card or even to take a loan out to avoid collections.

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