Builders Warehouse Client Abuse

I spent 2 days and over 300 minutes on the phone with Builders Warehouse wrt a faulty item. After hours on the phone, they finally agreed to credit me, and instructed me to go to the branch to refund item. I am in a wheelchair, and suffer from seizures. I explained this to call centre agents, and told them I need the refund to be ready. When I got to the store, the store manager refused to refund me, and spent half an hour trying to call the call centre. The result was me having a small seizure and having to receive medical attention. They made me sit in the heat, hda to deal with several different people, and the manager refused to assist me further. They are a ridiculous bunch of amateurs, from top to bottom. In the end i spent more money on dealing with them, than the value of the item refund. Please avoid them like the plague this festive season.