How do you cancel an order?

[#1]

I signed up for Plusnet and paid the first month on 1st September.  I have received a welcome email and that is all.  Plusnet have had my money for over a month and I have had no communication and I cannot contact them.  I want to cancel and get my money back as if it is this bad at the start it's not going to get any better!  I am currently with Talktalk who I thought were poor but have to say they run rings round Plusnet for communication and I will now renew my contract with them but I want my money back for the non-existent service I received from Plusnet.  How, just how do you communicate with these guys???

[#2]

@HJW1 

You can always write, see  https://www.plus.net/support/pdf/plusnet_cancellation_form.pdf (this is a pdf download). As you are outside of your 14 days cooling off period I would write and say that you are cancelling because they have failed to contact you or provide a service within 30 days and that you are exercising your rights in accordance with the Consumer Rights Act, see  https://www.citizensadvice.org.uk/consumer/somethings-gone-wrong-with-a-purchase/if-something-you-or... and please return my money without delay.