Badly fitted tyre and an owner that doesnt care

Nice guy but lazy staff and no supervision. I had a rear tyre fitted. After I left and got to my BnB, I noticed they didn't clean off the old double sided tape from the old balancing weights. 2 days later, the new weights fell off. Obviously they didn't even clean the rim before putting on the new weights If this is what you do all day long the owner and staff should know you cannot stick double sided tape to a dirty rim. As I am now in the Cape, I called Marius to tell him. His reply was "ok, thanks meneer" and he put down the phone. He didn't even care. I suppose he did the sale and made his money. I definitely would NOT use him again.