Bad customer servise when querie

On 12 April i emailed Lewis customer services because i do not understand omething on my statement. Yesterdag the 18th April i phoned Lewis store Welkom and spoke to Mary Sithole and asked for help with the statement because i do not understand why they charged an extra R1000 on the last R1683 that was owed. She never came back to me. This morning 19 April i phoned and asked if she dit find out anything and she said; NO I PUT A QUERIE ONTO THE SYSTEM. I said it was not good enough and we had words. We were rude to one another. She put the phone down when i asked her name. She did not want to give me her name, i phoned back and asked the fist person answering the phone what is the managers name. They phone weekly to ask to come and buy!! But when you ask for help with a querie they dont do anything.