Thank you for taking charge of contacting our clients.

感谢您负责联系我们的客户。

And I don't like the business end of it, you know, contacting clients for work, negotiating contracts, which get long and complicated.

而且我不喜欢它的业务端， 你知道，联系客户工作，谈判合同，这些都变得冗长而复杂。