Trailer Rental at U-Haul

The day before my rental, the pick up location was changed from a larger Uhaul rental in McKinleyville to a smaller facility in Eureka. When I arrived to pick up my rental, I was waiting for 20 minutes before a staff member came to the front counter. I was then told that only a 10 foot truck was available to me, even though I had reserved a 15 foot. The single staff member began to check out the next customer on the register next to mine, and told them they could have a 15 foot truck. When I protested, since I was there first and had put in a reservation, I was told a 15 foot truck was not available to me because this other customer was an 'in town' rental, and I was using my rental to move to the next town over. When I asked if I could pick up a 15 foot truck from the original pick up location, I was told 'we don't have the staffing for that.' This forced me to take a smaller truck, which caused me to take an extra trip, and I was charged $46 in overage miles as a result.