Checkers not refunding me

My wife tested covid positive. So we both had to self-isolate for two weeks. We decided to use this app, so that we can get some food delivered. Two of the items that I have ordered, were out of stock. The "policy" claims it I will receive my money back in 3-5 working days. This has been more than 3 weeks. Every time checkers has a new excuse when I ask when I will be receiving my money. Till today it has not been sorted out, I have complained a few times, and still nothing except excuses.

Is this how checkers is making money of of their clients now? I thought checkers says no client will leave unhappy. Well I am very unhappy now and checkers will never see me again, because this is not the first time that i had problems with checkers, but this is going to be the last time