Truworths online nightmare

I ordered 10 items onsale online on the 30th January 2020. I received an email from Truworths on the 11th February 2020 indicating that 7 of the items I ordered were out of stock and i will be refunded for them. On the 12th February 2020, Truworths has another mark down and 1 of the items I was informed is out of stock is being advertised. How? Since they said it's out of stock. I am starting to think Truworths stuff keep some things for themselves and inform us that it's out of stock. Disgusting behaviour