Builders Warehouse Delivery Cost!!!!

Recently I needed to purchase a new stove top, we went to the store on Buffelsfontein Road in Port Elizabeth only to be told the product we wanted to purchase could only be purchased on line. Incidentally we also needed a few other items which we purchased and then left to commence with the order online What a sham! I would like to ask Builders Warehouse how the Univa 4 Plate Ceran Hob Black U156CB for R1999.00 came to a total of, wait for it...R23, 184.00??? The DELIVERY fee was state at checkout as R21,185.00 and VAT @ 15% R3,024.00. This came to a total of R23,184.00!!!! Please tell me this was a system glitch! Needless to say I never purchased it and then bought the same item from Takealot with a zero delivery charge. Secondly, your website is a nightmare to navigate, and customer service is shocking! I have a screenshot of the attempted purchase as proof. Can someone at Builders please tell me why I was quoted such a ridiculous delivery fee from Roodepoort to PE, was it coming on a Private Jet? I will therefore never attempt to buy anything from Builders online again. Shocking.