NCELL review: pay to much money for sim an data

I bought a Sim card and some credits at the airport of Kathmandu. i paid almost twice the normal price. i get in contact with the company, i told them that i dont want my money back but i to ask them how are you gonne prevent that this will happen again? i think that they are try to rip off all the tourist that come to Nepal. the sad thing is that there are a lot of volunteers now to help the peolple after the earthquake and the get screwed at the airport. untill so far now answer from Ncell.