Disappointed by false advertising

Stop selling us lies. I bought items which were to be delivered by the next day and they were not. I was then told by their representative that my order is scheduled for a specific date and they cannot speed up the delivery, however when you are buying you select the fastest delivery option which says delivered by tomorrow! And he told me if the order is not delivered yesterday they will refund me but it’s not about refunds and all but by fastest delivery and now I can’t even change address because I won’t be where I expected the order to be delivered to and changing delivery date will mean I won’t get the items ordered as soon as I needed them.