Clarena and I wanted to travel by train from Vientiane, Laos to Bangkok, Thailand but we were stopped at the border in Nong Kai. Being Colombian Clarena was not granted a visa and we had to go back to Vientiane. Because Thai immigration had already stamped my passport we had a hard time explaining Lao immigration why my passport had Thai stamps and Clarena's passport didn't. After more than one hour they finally seemed to understand. We had to pay for a new visa and were allowed in. The next day we went to the Thai embassy in Vientiane to apply for a visa but again it was refused. It seemed we were stuck in Laos now for the rest of our trip. We decided to change Clarena's flight back to Hong Kong and spend a week there.