So I was on my way home today from school and my journey requires 2 buses. I got off the first bus and realised that I had left my oyster card , but before I realised, the bus had already went. I don't really want to order a replacement until i make sure that it is completely lost. How can I get it back? I read that there is an online form, but would that take long for them to process it and get the card back to me? Would it just be better to call them?