Feeling *****ed

I bought a ticket online a few days ago for my grandfather, but I was struggling with the website, as is went back and stalled, but eventually got the ticket bought, paid it, and when I got the invoice on my email the date was for the 03November and it was supposed to be for the 3rd October, I emailed safair immediately when I saw the that there was wrong info, they responded quick and told me it would not be a problem to change the ticket date, I just shoulf phone the call centre to do so, witch we did, and they made a new booking, and we lost my grandfather who is a pensioner money, and had to buy a new ticke, I feel this is very sad that they would take an old persons money and dont even feel bad.