Not volunteer attitude by the company office

The company only cares about the money you pay but not about the real human exchange that is the most amazing thing in any volunteer opportunity. Until you pay they are super nice, after it, anything you request does not count. The program says I would have tours on weekends so I would go to the project with kids in the week but they decided to buy a tour in a Thursday without consulting me and so I found out when I arrived in the country and didn’t give me any option for a change since it was booked already. So, what is the problem to miss a day with the kids? For them really didn’t seem an issue but the name of the company is volunteering solutions so I thought it would come in first place. The headquarter of the company is not friendly, the local people in Peru that supports the program, the best ones you will find but unfortunately they don’t make the rules.