Have you already completed the shop? You can't get paid unless you complete the shop on the date you chose. As to the matter of no response, go to your list of MSPs (select the link in the left column of your main iSS page) and scroll down to the MSP listed for the shop you booked. There should be a phone number listed along with their email. Try that and see if you can speak to the scheduler.
When you refer to a contractor, I gather you mean the MSP. If you are referring to the Client, that information is unable as the MSP will not provide that information (usually the shop contains that information anyway).
Hope that helps.
Thanks Norm. By contractor, I meant the scheduler. I was so excited I chose the wrong date. I have not completed the shop. It was for the 7th but I selected the 11th. I will still go and contact the scheduler to see if they will issue a form do I can complete and at least give my opinion. I realise my fault so I'm not expecting compensation for something i messed up. Thanks on the advise.