“请放心”用英文怎么说

问题描述:

“请放心”用英文怎么说
外贸函电中经常会遇到碰上客户担心的事情,我们解决了以后会回复他们:请放心.
请告诉我这句话在老外的语言里怎么表达最准确?

You may rest assured.
Make yourself easy (=Make your mind easy
you may rest assured that...
请放心我们一定遵守诺言.
Please feel assured that we will abide by our promise.
请放心,我们会准时完成的
Rest assured that we will finish on time.