Unfair and poor,rude and horrible customer service

On 27.01.2018 I went to Pick n Pay in Bramley view, am going to start of by saying I'm 8 and half months pregnant and I have no time to tolerate this kind of treatment. I bought three buckets and I was charged for four buckets and the reason being its because the girl that was helping me sizakele Banda was chatting away with her colleagues talking about day off and she did not even notice the mistake that she had done and now I have to spend my money and my petrol now to go get a refund for that one bucket and what ****es me the most of is that when I checked my slip and I noticed that I was over charged I called pick n pay ....my airtime and I spoke to a lady that took my numbers and she said she will look into it and call me back and which she never did I had to call back to get a follow up and someone else answered the phone and that women she didn't have the decency to get the phone from the person that pick up ...she just yells on the background "tell her to come get her refund " how rude ..I buy at the pick and pay and I have never in my life experienced such disrespect and a women in my condition I have no time to be driving up and do ..trips that are no beneficial and time consuming for me because you guys have hired rude and have no customer idea what good customer service is