I'm sorry if this question is answered elsewhere but I haven't been able to find the answer through searching. I received £34.80 (vouchers worth £18.00 and £16.80) in RTVs for a delayed journey - my question is how do I use them if the journey I want to pay for is less than the value of one of the vouchers? The journey in question will cost £7.70 and the RTV terms and conditions clearly states that there can be no change given - but can they give me change in RTVs? I would be buying the ticket at the station on the day of travel. Is it worth the hassle which this would presumably cause or should I just pay by cash and wait until I next do a journey which will cost more than £16.80?