Poorest service ever

I received the poorest service ever. Paid the account via eft... the consultants phone constantly informing me my account is in arrears. Fax them proof of payment... still they can't seem to get the payment. Today I make a payment again R100p. Took a few items... get to the till points and tge lady inform me that I don't have any credit... I show her the slip of the payment I just made where it shows R6400 credit... they can't help me because their system shows that a payment was last made Nov 2017... This is humiliating... This is embarrassing. I stay in Robertson and need to drive to Worcester tomorrow again just so that Woolworths' staff can do their job... Woolworths are not giving quality service at all. I have been struggling more than a month to sort out things their staff get paid for. I have to spend extra money for Woolworths to do their job...