Domino's Pizza — haven't received my refund

Address:

ox28pg

I ordered the big night in deal through the app from Dominos in Kidlington, Oxford on the 1st January 2019.[protected] i made the purches with my card online. i then got a call a few minutes later saying that they are not delivering since it is new years day and that i can cancel the order or come and pick it up. i told the domino’s employee that i would like to cancel my order. in was told my refund would be in my account in 5-7 working days. two weeks later i call them back since i haven’t received my refund. i was told that the employee would have to find out who was manger that night and ask them about my refund. i was told they would get back to me. a few weeks later and i still haven’t heard back from them so i call again. explain the situation again and got told the same thing. it was been a couple more weeks since then and i have still not heard back from them nor have i received my refund for £23.99. all i would like is a full refund.