You can't generalize all politicians since not everyone does the same things. But yes, most of the politicians today really cannot be trusted. And although your story may seem hard to believe, such cases really do happen. This is because world of politics is such a messy place. A lot of things that we don't expect to happen normally on our daily lives happens behind the scenes. Deals with huge businessmen/people and political parties happen and sometimes even with some illegal organizations. This is because most of the politicians out there are desperate for money and influence that they badly need to secure positions and gain power. Which is why in some places, accepting bribes branching out from top government officials to the lowest becomes the norm.