I have recented recommended a translator to an agency because their rates are a little bit low for me. And then they phone me on a Saturday morning and say that they can’t get in touch with her, please, save! But I am sure they had her CV containing all her contacts, just forgot to look there, or maybe lost the email.
Here is my conclusion: It’s unwise to hope that a project manager will make special efforts to get in touch with you. In many cases they would rather address another translator. So it is not enough only to provide all methods for getting in touch with you, but also test them. For example, establish connection via Skype, exchange phone calls, store the agency’s phone number in your mobile to know who calleed when you have a missed call.