Terrible delivery service - still waiting for refund.

I ordered food from Woolworths online on 15 June for delivery on 20 June between 10am and 1pm. I called several times before 1pm to be sure it would be delivered on time as I could not take delivery any later as I start work at 1.30pm. Agents promised to call me back but didn't. At 1.10pm when I called again, I was told there was a two hour delay with deliveries. I cancelled my order (as I would not be able to take delivery) and was promised a refund within 7 days. Despite cancelling the order, the driver called me at 6.30pm to say he was outside my house. I was not there - and told him the order had already been cancelled. I am still waiting for my refund and Woolworths (***) does not respond to emails.