Loot failing to deliver

Loot.co.za is failing to deliver on time or to even deliver. This is not an isolated incident. Prices and availability changes day to day. Specific case, I ordered an item on 2 Jun with 2 to 3 days expected delivery so dispatch was 10 Jun. A few days after 10 Jun, they sent an email saying it will now only be dispatched on 30 Jun. If I send an email, there a stock reply that I should rather use social media. In March I had the misfortune of ordering a modem twice from different suppliers on loot and both orders were cancelled with credit. 2 days after I placed the Jun 2 order with loot, the same item was available for immediate delivery. I sent an email to loot questioning this, expecting to swap the item but no reply. I sent another email highlighting the item is for a birthday present and required by 25 June and still no reply. Because I used a multiply voucher they will not refund me but will only credit me so I seem to be building a huge credit with loot with all the cancelled orders but unable to use them!