Loot NON EXISTENT service

I am more than fed up with Loot's appalling service. I paid for an order on 8th August. On their web site it is was (and sitll is) clearly stated that the book I ordered would be despatched within 5 to 10 working days. I have STILL received nothing. This is the second time it's happene on two separate orders. I keep writing asking for the delivery of the part of the order that is ready, but theyignore m eand keep reassuring me it will be delivered, no in the next 3 to 4 days. This is now the third time it's been delayed.