Awaiting my refund from Game store (massmart/walmart)

I made an order online only for pick up/collection, only to be called within the hour that my order will be allocated to another store but for delivery due to lack of stock on the store I elected.

Question: why did your system allow me to place the order if there wasn’t enough stock? And why change my order to the way it suits you and not me as the client?

I requested for a refund, it has been over 10 days and I still have not received my refund, I suppose I must beg for money to be paid back to me right?

I will never recommend this store, it is part of the reason why this massmart store is running out of business and closing down stores due to this service or lack thereof!