On Grand National Day my partner and I went to place a bet. We are not gamblers and know very little about betting. Our only vice the Derby & National. We filled in the Grand National betting slip asked for the prices paid the money & left. We had 1st, 2nd, 3rd & 4th place winners and my partner went to collect. The betting shop had written the wrong prices down and they refused to pay the amount. We have been to arbitration and have been told betting shops can correct their mistakes as it is in their agreement to do so. Is this really the case? Also the prices could have been different at lunch time when we placed the bet but we were given the final figures - is this fair.