I ordered 6 Hi ball tumblers from Rinkit Ltd, via Amazon, but was disappointed when they arrived, as I guess I misunderstood the size and they were much smaller than I expected.
I wrote feedback, when prompted by Amazon, and stated that this had happened but, as I supposed it was my failure to adequately check the size indicated, expected nothing. Hi ball tumblers 170ml (6oz)/85mm (h) set of 6. To my amazement,Rinkit contacted me by phone and email asking what they could do to help. They offered a 50% refund but, when I asked if they had the bigger glass that I thought that I had ordered, they sent me 6 of them at no extra charge!
I have not encountered such fast and generous customer service and I recommend the company unreservedly to anyone.