WORST SERVICE EVER

I app**** for a month to month online with Mondo online two months ago, they failed to deliver my router and then I cancelled my order. Now they're telling me they cannot refund my money into my account because they're an online store, YET the order was done online??? I should go to an MTN store. Darren Harris at MTN store Mall of Africa advised me that they can actually do refund because everyone has access to do this. Anyways, Darren requested the refund and said I will receive an e-mail to confirm if the refund was successful and if I don't I should comeback. Now, I am trying to call the store but there is no answer, I cannot go to the store so since he has all the documents required for the refund I wanted to check if the refund was successful. Mondo is so useless, their customer service is pathetic. I regret ever applying with them, I want my refund!! I need someone to call me and do everything online because I WILL NOT GO BACK TO MALL OF AFRICA WITH MY PETROL MONEY AGAIN