going from bad to worse

Just came from builders. Can understand the company is going down , but pathetic. No pricing on a number of items.If there is a price, shelf price and till price differs. Then to top it all , i got charged for an item i did not even take . I checked on the website what the item is, its something i did not even look at. Going to cost me more to go back and take this up . PATHETIC I actually went for something which the had no stock off. Should have just went to Leroy Merlin in the first place. I will still have to go there to get the item.