I have recently applied for an unsecured personal loan but have been declined due to credit defualts. What are

my options now? I need to get money soon for a trip. I have paid for all my flights, insurance, accomodation already and juts need spending money. I cannot think of ay options and these defaults are from when I was a lot younger and took out mobile phone contracts in my name for others who never paid them and I now have to accept this bad credit. Help!