Concert tickets not recieved - Show this coming Friday

skot4th

Following the Manchester bombing earlier this year several concerts have been cancelled. The show I was due to attend this coming Friday 14th July however has had the venue changed to the Castlefield Bowl, an outdoor area in the city centre.

All tickets purchesed for the show at the Manchester Arena were cancelled and new tickets issue for the new show, with a pre-sale on Thursday 22nd July for people who originally purchased tickets.

I repurchased my tickets through Eventim as that was my original retailer, however I am still waiting for my tickets to be delivered.
Every other retailer (ticketmaster, gigs and tours, etc.) used an online e-ticket system, however eventim have opted to post tickets out.

Whenever I call them they tell me that the tickets will be posted "soon" and now I'm being told it'll be this Monday (4 days before the show) and if not I can have them re-issued for box-office collection on the day. As the venue is an outdoor square / public space there is no box office, however they've told me there will be a pop-up box office on the day.

After spending £200 on 4 tickets I don't feel too comfortable waiting until the day to collect them, especially as eventim and their staff don't really seem to know what's going on.

As I've paid for standard delivery (£2.50) when placing the order, will I be eligable to cancel the order due to breach of contract as they have not sent the item out and now seem to want people to collect them in person, negating the need to pay for postage on top of the booking fee.

If not, is there any other way I can cancel my order and re-order through a different service?