untrained manager with pathetic attitude

I went into the above mentioned Spar on the 11 august. I got to one of the aisle ends and seen the c***** 6 pack milk marked in huge bold numbers for 62.99 alongside boxes of weetbix. I took 3 packs and a salesperson tells my husband it's actually 78.99 so my husband went to look for the manager. He was told that's the price of the weetbix n he left. I then saw that the weetbix was actually 43.99. I called for the manager again and was assisted by a supervisor. She said the weetbix is an add on item and that's the price of the milk. When I spoke to Peter the manager I said that's the price I see and that's the price I pay as per the consumer protection act. And he very rudely told me that I will not be paying that price. I asked if he was fami**** with the law and he said he won't allow it. I asked for an area managers number and was told he does not know his am's number and surname. How ridiculous. He then gave me an incorrect head office number. If was a different race I believe it would have been handled better! I will be taking it up and lay a formal complaint and take it further. Customers should not be treated like this by ****** unhelpful *********** managers!!!!!