HELP ME URGENTLY PLEASE!!

i ordered food and paid for my food with eft and being a regular customer knowing that the app automatically select the address and then realizing that the address is wrong i struggled to get ahold of them to change the address and they didn't have the drivers number to inform him and i then contacted the people at the address that was selected to be delivered at to tell the driver that i will pay out of goodness of my heart to get my already paid food an additional R50 when e brings me my food and he denied the request and hangs up. now i am in a loss of about R320 give or take considering bank charges and then the manager phones me to ell me that i will receive my full refund and only to get mailed saying that i will not be receiving any refund. so i paid for food and because their app selected the wrong address, my children had to go sleep hungry and someone at Mr. d got R300 worth of free Gatsby. i am disgusted by this and want to escalate this to my contacts within social media as well as repot this to the CPA(consumer protection act) as its bluntly been theft and if possible i will go as far as opening a theft case for it as i cant deal with the way they treated me over the phone as well. please check my Mr. D order DFD*** and ask for a copy of the phone call as they were not even attempting to help me to get my order delivered. please assist as i am unemployed and cannot afford to lose the money which is a lot in my eyes..