Placed order 26/July/2015, still nothing received

On the 26th of Aug I placed an order (Order# ***) on the website, then only got feedback on the 31st (after phoning) that stock might not be available. <br> <br> On the 3rd of Aug I got a message from Georgia stating that they located stock and will ship it during the course of the week and that I will get a shipping notification. Instead, I got an email on the 7th of Aug that no stock is available (why then tell me stock is available?), and that I should submit my banking details for a refund. I also got back the voucher I app****. I immediately requested to change the order to another item and to apply the given coupon, then I will just pay the difference, but after 5 days of phoning and emailing, I am not getting a response on either. The phones are just kept busy.