The telesales people are a real pain in the neck, they keep ringing me.

电话销售人员真烦人，他们一直给我打电话。

You must have previous telesales experience to apply.

您必须有以前的电话销售经验才能申请。

I thought briefly that I had preferred him when he worked in telesales and couldn't pass a petrol station without stocking up on Mars Bars.

我短暂地想过，当他在电话销售部门工作时我更喜欢他，而且如果不在火星巧克力棒上进货就不能通过加油站。