Worst Service ******* from Take A Lot

I had the worst Service from Take A lot, I ordered a Hisense HD 43 inch TV the Costs was R3,599 when they Advertised it on the Take A lot App, they sent me a message to Confirm the Payment they told me that My TV will be delivered on the 13th Of. APril, I waited invain they sent me A message on the same day on the 13th to inform me that my order has been delayed, my order was lost in Transit they will refund me with Take a Lot Vouchers, when I checked on the Take a lot app Again The Hisense has gone up from R3,599 to R4 200 and the TV is still instock on the App worst service Rio off