Daylight ******s & Unable to keep to promises

On the 17th of April I placed an order using the Sixty60 app for a total of R524.28. I was then forced to pay an additional R100 to "Prove I'm willing to place the order" which would then be refunded (Deposit). Of the total order which reflected as "In-Stock" only R276.93's worth of items were delivered leaving a total of R347.35 to be refunded. I've since then emailed continually to try and get my money back (still have no answer). On Sat morning the 2nd of May I was promised that on that same day I would receive proof from Checkers/Sixty60 that they've refunded this amount. I am still waiting for this proof. I was originally told that it takes 5-7 working days for the refund to take place. Today and age, this is unacceptable as everything is electronic. At this point it's been DAYS that someone is drawing interest of this amount. How many other SA citizens are being ****** like this?