Installation engineer didn't turn up

[#1]

I ordered Plusnet Unlimited on 21 March, with installation scheduled for Thursday 28 March, between 1pm and 6pm
A number of calls were received from a telephone number during the morning, bu no messages left to indicate who this caller was.
Between the hours of 1pm and 6pm, the property was occupied by at least one person at all times. The front door bell of the property is fully operational.
By 6pm, no engineer had turned up.
This morning, I called the support line and spend over 60 minutes being shuttled back and forth on hold, being contradicted and all but accused of lying.
I am no closer to a resolution, and still without a phone line or broadband,
How does Plusnet propose to resolve this?

[#2]

The response is to apparently cancel the installation altogether. Yet I am still £74.96 out of pocket.

[#3]

I understand we've now refunded the money and closed your account.

[#4]

So I've basically been told to piss off.
Thanks.

[#5]

I was under the impression that you'd spoken to our Customer Options Team who had advised of the reason for this and why we had to close the account?