Bad experience on online shopping

Disappointed in lack of communication & delays on allocating my payment after online purchase. I placed an order for a shower door online & waited for delivery cost quote via email for the entire night. The following day i called CTM & only then i received the quote. I was told the shower door is now out of stock but if i don't mind i can wait for my order once the payment has reflected or get a refund if the supplier doesn't come through. I paid & sent POP. Weeks later i take initiative to call & ask about my order ,only then they checked POP & allocated it. Only to come back with available options which are higher in price & totally different from what i ordered. I made them aware that i need shower door not corner shower .I was ignored again .I need my refund so that I can move on from this ...