Dial-a-bed - *****s!

We bought two queen size bed and base sets from Dial-a-bed, Arbor city, Amanzimtoti. We chose the Shasta set. Because we bought two beds, we asked for a special deal. The sales lady discussed with her colleague, and came back to us with an offer of R20,000, delivery included, which we accepted. When the beds were delivered, we received two cheaper mattresses, not what we chose. Looking at the invoice, the sales lady actually invoices us the wrong beds. Can I ever trust Dial-a-Bed gain? I cancelled the sale And asked that the POS sale is reversed. She then wanted my bank statement, a demand I cannot accept since my bank balance and a lot of other personal detail is on that, plus the fact that I am in KZN, and my bank statements are at home in Gauteng! I don't have beds, I don't have R20, 000 and am VERY frustrated!