.Horrible customer service TFG Foschini

Opened an account at Foschini because I wanted to have a good record as I was told by the banks that i am too clean. I usually pay my installments cash. I forgot my Jan 2019 payment and received an email from them regarding this 15 Feb 2019. I went to the store and I paid cash same say. I have been phoning and emailing them to give me an updated statement or a letter to show that my account is not in arrears. They said they will send it to me 24-48hrs. Its been battle for just a simple letter. I am closing my account because every time I phone it sounds like there is nothing on records its like a new query. They are all saying different things, some say I must wait till 15 mar 2019. Terrible disappointing.