On Tap East London

I have had bad experience with On Tap East London. When I started checking my stock for my new build there was stock I had paid for but was not delivered. No one notified me until i queried it. I am still waiting for stock I paid for 6 months ago. I am concerned as they are saying they can’t get stock or it is in back order but when I contacted other shops they said they can get those items within the week. I keep on phoning and people you ask for are never available or not in their office.