Started great but disaster now

Advertising stock but they dont have in stock when you order. had to order some items 3 times because after i order they say not stock but week later you see advertised they have stock. Always items not in stock when order. Take long to deliver than any other place i order from. I have put in last order to snatcher and wont be ordering again. It is just getting ridiculous to go on like this. I havent had this many problems with any other online shop. Started out great but just went downhill as they got more clients it seems they cant control their stock's in and out goings at all.