AutoUnion Car rental in Protaras Hotel Delivery

In general, everything is fine, the car was delivered on time, the machine corresponded to the order, a moderately new truth, under 60 thousand mileage, but for the first time, and I took the car abroad more than a dozen times, I was faced with the fact that they were given not with a full tank, but as if how much will have to .. give, too, they ask like the same. I think this is inconvenient. I don’t understand for what mileage what is in the tank should be enough. In this particular case, it was not enough for a hundred kilometers. It gave me a few exciting minutes. When you return it is necessary, apparently, to calculate how much to fill.
I filled the tank out of habit, used something, of course, but gave it back with more than I took. It seems to me that this is some kind of petty scam of the rental company. Therefore, I would lower the points.