Zero Balance - Shocking Service

I ordered a pair of running shoes online last Friday. They promise 3-5 working days delivery. On day 4 I still had no tracking number, so just in case I called to see what has happened. The lady who answered said she couldn't find a tracking number but would call me back to see what the problem was. 7 hours later, i still hadn't received a call back. So i called, the gentleman who answer said oh yes they had been discussing this earlier (yet no one discussed it with me), they are not sure what happened but there is no stock so they have refunded me. No call back to explain, no email. Now i have to wait 3-10 WORKING days to get my money back and in the meantime i have to run barefoot?? Absolutley shocking customer service, what have they been doing for the days between my order and me phoning? Hoping i would forget about it? Now i have no shoes for the race this weekend.