Charged for Uber drivers incompetence

This morning I requested an Uber to work. A driver who was too far accepted the request. He then sends me a message to say he's sorry he's too far. I then cancel the trip because I would get to work late should I wait for him. Uber then takes out the full amount for the trip and doesn't even refund. I asked for help and now they only refunded 40% of the full trips amount. First of all this isn't my fault that the driver accepted a trip that would be too far, for me that's inconsiderate and all Uber was looking for is a free trip money. I didn't use thier services and with good reason. I don't accept how I must be charged for their incompetence. I'm sorry but I don't accept this. Disappointed client