incorrect pricing from house & home sales rep

this is the second time I go into house and home in N1 city to purchase an item only to be given incorrect pricing. on one hand they say an item costs a certain amount and then afterwards a HIGHER amount is charged. last time I was **** to and told an item wasn't on sale when it actually was. now I get told delivery of an item is more than what I was initially told. this is against the consumer protection act and should be addressed!!!!! because when I call to query the matter no one wants to accept responsibility. calls are transferred. place on hold and call backs are promised but never received.