Shoprite/Standard bank

It has come to this point where I am completely ****ed off now. My story started on 15th May when I went to shoprite in Watergate bought few items swiped double payment went off to keep a long story short I checked my acc 2 payments went off of R503. 45 phoned shoprite was told wait till the Monday it might reverse waited till Monday afternoon nothing reversed went to shoprite was told they balanced its my bank they gave me a authorized letter saying bank must reverse went to bank with letter stood for an hour was told going to take 10 working days it's 15 working days now and nothing and no one phones phoned head office a few times up until now no one has phoned this morning I phoned and was basically told not shoprite problem was my bank and that I need to go deal with it with my bank remind you I swiped by shoprite but it's my bank problem which is standard bank so what do I do now phone my bank with once again my airtime my petrol my time and mind you that double amount they took was my rates money which I am behind with now