shocking shocking shocking service builders!!!!

I visited your somerset west branch on 3/3/18. After buying R3500 worth of building material I went to the back to collect half the stuff. Your staff are so slow and lazy it is like they are doing you a favour to bring the stuff to your vehicle. After standing close to 30mins in the sun, waiting for my stuff, the guy comes and tell me they do not have 2.4M Rhino board in stock only 2.7M and that I need to go back inside so they can refund me and ring up the 2.7M. So back in I go and stand in the que. Finally I get refunded and pay again to go back for the now 2.7M board. As I get to my vehicle, (bare in mind this is now close to 20mins again later) they have not brought the tiles yet!!!! So I am still waiting!!!!Finally the tiles come and the new 2.7M rhino board. I check my slip and I see they double rang the tiles so now I have to go back inside again to get a refund of R380...Again in the que...Finally I get my money back and off I go to my vehicle. I see they loaded everything and the rhino board is placed ontop op everything(tiles,grout,cement, toilet ect). After the 1st stop street, I hear a loud bang, to my inspection, the staff packed the tiles upright and it fell over!!This has to be the worst experience/service I have ever experienced.I have spent countless amounts of money at builders over the last 4 years. Even now I am busy expanding my house and have to buy materials and highly doubt that I will phone, let alone collect anything from this *********** branch.You guys need to get your act together because you have just lost a client. And as I said, I have spent countless amounts of money @ builders.