Zero respect for customers at Truworths

I was paying at Truworths then decided just one more thing a cellphone. I know they check you before if you qualify. I asked where to check. The teller told me to do it at her tillpoint. She asked for my ID then told me I qualify. She told me they need proof of residence and that bank statements are also accepted. I went to the bank to print the statement. Then I was taken to the teller, the phone came. A form is filled up and a teller slip both to sign which I did. Then I'm told I don't qualify because of two months that I paid late. Everyone closeby is looking, there is a call made and there are questions to one another that side why this account doesnt accept a purchase 'Now'. Because they checked and said okay. I was annoyed not because of a phone I can get that anywhere as I did. My problem is why not at the first check so you walk away. Why do they process first and then when you buy 'On 2nd thought Mam you don't qualify'. What nonsense and humiliation is that for? Must you first be centre of attraction before they tell you they are not giving you a lousy 3400 cellphone? Stupid service to customers this store. I left there without ensuring they destroyed my signatures on purchase. I will not be surprised someone might get something under my name signatures are there. It happens all the time but if they allow that to happen I will give them trouble and lots of it.