DEBONAIRS (KURUMAN RESTUARANT FAILED ME)

I bought a pizza (tripple deck)online on the 25th of November at Kuruman Debonairs, I not not receive an order number as usual on my email, an the order did not appear on my orders as well on the app although the money was decucted from the account, i went we to the restuarant an explained the matter to the manager he then said that the order did not go throu so my money will pop back into my accout the following day. 2days later i was still waiting for my money then i decided to go back to the ewstuarant again, when i got there it was a different manager i told him what happened n he asked me to get him my bank statement so see the deduction an he said the money will be transfered back into my account after 7 days, 10 days passed i went back to the restuarant i found the first manager who assisted me on the 25th he asked me to leave my numbers so that he will be able to contact me once the matter is sorted and he also gave me his, i have been trying to call him for the past 2 days now he doesnt take my calls.HOW DO I HANDLE THIS MATTER?I WANT MY MONEY BACK