Phone number for Glue Masters?

[Sycamoron]

Anyone have a phone number for them? I have 2 unopened bottles of thin glue that I'm trying to return and I haven't been able to get a response from Glue Masters. I tried the "contact us" form twice and also sent a reply to david@gluemasters, which was the email address on the order confirmation email they sent when I placed an order. No response.
I initially tried the returns & orders page but the customer service link you need to use just times out without opening the page. Tried it with different browsers and using a PC and an iOS tablet. Nothing works.

 

[JGT]

Don't have their phone number but they are on R2R @Glue Masters