Как по Английски будет el-nunca-nunca

Как переводится The-never-never на Русский язык:

Что значит The-never-never в Английском языке:

Using a system of payment in which part of the cost of something is paid immediately and then small regular payments are made until the debt is reduced to nothing

Примеры использования:

I don't like buying things on the never-never because they charge you such a lot in interest.