No Service at Sanral Westgate

My Mom is an elderly lady whom struggle to walk, She visited the Westgate Sanral Store yesterday to pay her E-Toll account. Upon arrival she greeted 3 ladies at the shop and was rudely instructed to leave her trolley outside , she uses the trolley for support as she struggle to walk and stand for long periods without support. She proceeded to comply with their request and inquired into the amount that she needed to pay and handed her Debit card for payment, The ladies requested that she wait and after several minutes so requested confirmation of whether the payment had been made, the lady then in a rude manner, proceeded to tell her that they were offline and that she can't help her unless she pays cash. She subsequently walked to the closed teller withdrew the cash and went back to the store. When she arrived another gentlemen was inquiring abouit E- toll and the lady simply added him a pamphlet and told him to go and read it, he responded saying that he can not read, to which the lady rep**** that it was not her problem. My mom then proceed to the next available service consultant and handed the cash to the lady , her reply was , sorry we don't have change.!!!!