Highly Irritated

I placed an order for the Staywell pet door on the 30th June 2015 via the mobi app. When I received my confirmation of the order I saw that it would be delivered by the 16th July of cause I queried that with your call centre and was told that because there's no stock of the item delivery can take longer. Ok on your mobi app it says delivery will be with 7 - 10 days it does NOT stipulate 7-10 working days as I was told by one of your consultants yesterday I was also advised that the mobi app does not have all the features that the site has when accessing it via a pc, again NOT my problem. I was advised that delivery will take place within 7-10 days and tomorrow marks 10 days. This is the first time I've purchased with you guys and I am not very happy with the current service I've received. I even requested that the consultant contact the the suppliers to find out what's happening and was told that they would do so and call me back and when I was not contacted I called back again with the same request and was told that the suppliers are going to say the same thing I have to wait till the 16th. I would like feedback with regards to this please.