Awaiting for refund on a cancelled order

After countless attempts to get assistance with being refunded for a cancelled order placed online at 13:50 on the 29 May 2018, Wonder Park Debonairs pizza still haven't assissted or tried to contact me with this issue. I placed an order online, buying pizza and after realizing that the City is incorrect, I immediately called to inform them and asked that my order be cancelled or be transferred to the City of my residents. They told me that's not possible, so I cancelled the oder instead. I then called to inquire about being refunded, which they promised to get back to me and never did, till now. I called numerous times, the consultant who helped me was very helpful and said that the manager promised to get back to me and never did. So I called some more, pestering them hoping to get assistance but nothing. I called again today and was redirected to a call center which then redirected me back to the store, which the store call center assistance told me to call the call center and tell them that I haven't been assisted with my refund from yesterday. When I told her that I did call and the call center and an online platform told me to call the store directly hence they are unable to assist me, she redirected my call to the call center instead and was placed on hold until they hanged up. Now what am I to do in order to get assistance?