Not my day to shop

Last night when I visited Beacon Bay East London PnP branch it was just not meant to go smoothly. I walked in to find only 1 white star bread available (the same happened on my last visit which I thought could happen anywhere but twice in a row is a bit disappointing). I then continued down the aisles and saw a sign that said Nestle Hot Chocolate 500g was on special for R 44.99 I scanned the product and it was the wrong price so I queried it. Just to be told that it was for the 400g packet. The staff member removed the sign and said there is a price tag for the 500g so the sign doesn't apply. Even though the sign is wrong, I think they should have given it to me at that price. I then continued shopping and saw Robertsons on special. Yet another sign said "2 100ml bottles for R 30 (spices, herbs or seasoning)". I went to the till and paid for my purchases. When I checked my slip the 2 bottles of Robertsons herbs came to R 46. I then went to the customer care desk again. The same staff member saw me and responded: "What is the problem now?" This should not be the practice. Whether I have 1 problem or 5, I should be treated cordially. I then told her the price problem. She refunded me but told me it's actually only for the brown bottles (seasoning). Possibly because it was the seasoning bottles on the picture. And apparently double the difference isn't valid in this instance so I was only refunded R 16. So disappointed in all these things. Yes, they are small matters but it is these little things that make shopping a good or bad experience at a store. And such a pity because Beacon Bay branch is the closest to my home.