We travel frequently through Kolkata airport and our experience of pre paid taxi booth run by Taxi Association at Kolkata airport is awful. When somebody gives a Rs 500 note for a fare of say 260 those unscrupulous fellows would return only Rs 40 with the slip as if by mistake. Very often our attention is diverted at that time and generally we check the slip rather than the money returned. This happens with most passengers daily and passengers are robbed of hundreds of bucks everyday. As we travel frequently we are now aware of their trick. We want police to run prepaid booth rather than any association or union. In Delhi airport pre paid booths are run by Delhi Police and we find it better managed and we do not have to face hassles like refusal by the taxi driver or we do not have to search the assigned vehicle frantically as is often the experience at Kolkata airport.