Bad service and misleading

I'm a loyal truworths customer who have been supporting for years I do spend a substantial amount on purchases which are mostly online.. On the 29 Jan 2020 I placed an order (o***8) it was for 5 items that were on a 50% sale around 6 days later I received a message saying 3 of the items are sold out and by then the 50% sale was over and items were still on sale which is slightly more than the 50%.I then did my own research calling few stores and I found out that such items are still available I then ordered the very same items by calling head office and received some but at a higher price then my original online purchase. I called online team on 12 Feb 2020 to find out why I was misled and told of no stock when they actually had and wanted to attract customers by mentioning 50% when they actually wanted us to pay more.I spoke to Gregory who told me that due to influx of orders they reject orders if its taking too long for processing. I'm so disappointed that I'll have to pay off my account and buy from other retailers since Truworths is misleading by advertising sale when they don't have capacity to deal with customers instead make them take their sales up.On 12 Feb I'm still waiting for my order.