26/06/21 I booked a one-way flight to Dublin from London Heathrow on 07/06/21 on the British Airways website. I was then given a voucher on 09/06/21 via email worth £76.92 which was the price of the flight that I paid reference PMWEGN. The e-voucher number is 125-[protected] I was unaware that this voucher was not to be used for my flight on Saturday 26th June. When I went to check-in for my flight on 25th June my reference number didn't show up, therefore, I had to buy another ticket for my flight which cost me £153 which means I had to pay twice for the same flight. Booking ref OMFJPF for flight BA0824 which was added to my executive club no [protected]. I am not happy that I had to pay twice and such a high price last minute which caused me such distress and financial loss. I cannot find a flight worth £76 on my return. I would like a refund of the stress caused and financial loss to my account. Thanks Jillian Ryan