Was that for just a few miles?
As you know, online, when you go for more money, less miles option, the initial miles cost 3 cents a mile, but then slowly the price starts decreasing and gets to 1.5 cents per mile at one point somewhere near 80% or maximum miles you can buy. The cost per mile then starts going up, and at the end when you reach 60% cash, 40% miles, your average cost of all the miles you bought is about 1.7 cents if I remember it correctly

In your case, did the phone CSR offer similar prices, or a flat 3 cents a mile for all of your 60% miles??