Well, you can check his website and you will know what the opening times are, he is very good in answer emails and if you don't want to talk with him just put an order online via email, if you really need to talk with him just get all the details of the product you want (exactly) and then contact him.
I have been dealing with him for a little while now and I have spoke with him many times and you can trust me, my English isn't that good that some people struggle to understand sometimes.
Good luck!
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