Thanks for asking your question! I'm sorry to hear about your tax issue and I'm going to try my best to help you understand or resolve it.
How are you today?
Provided that the organization is qualified...yes, travel expenses incurred for charity work are tax deductible.
You can read more about this topic, here: http://blog.turbotax.intuit.com/2012/04/16/deducting-travel-expenses-when-doing-charitable-work/
Is there anything else that I can assist you with today?
If not, please rate as "excellent" so that I may receive credit for assisting you today