What a rediculous service, then useless complaint process. Went into (food hall) store for small purchase and used self service till. Some items scanned but were not accepted into bagging area so staff had to acknowledge on the till to allow me to continue. Came to pay - till wouldn't scan Sparks card (from phone app), staff response to request for help was that is was a constant issue for them, but after 2 minutes of adjusting light levels and angle of phone had to give up. So I wanted to complain, found number and phoned. Their resposne was that the issue wold be raised with store management; I asked where was the customer in the process and how would I be advised the outcome of the complaint to be told that was not part of their process. Sorry, how can the customer raising a valid concern/complaint not be adviced of the issue or receive details of the outcome. So now 2 complaints lodged over a very small matter that should really ahve been resolved in store with a simple apology.