Ticketmaster complaint: Ticketmaster Needs to Refund

My daughter and her friend bought 2 tickets thru Ticketmaster for Reading Festival. Friend sold her ticket on 1st Aug. Remaining ticket on account has never been given a barcode. My daughter isn’t able to go and so has tried to sell the remaining ticket but we’re unable to transfer due to no barcode. We messaged Ticketmaster and they admitted that there is a technical problem their end. We agreed a sale of the ticket to a friend but because we cannot transfer they bought a ticket elsewhere. We’ve been left with a ticket we are unable to sell or transfer because of Ticketmaster’s technical fault and at £230 that’s no joke. I have emailed their Customer Service sept so many times, the last response from them was please allow up to 10days for us to respond – the festival is now in two days!!! Why has there been no help with sorting my problem and will I get a refund on my ticket????