RAGE SHOES AND BAD SERVICE

I bought shoes yesterday at rage and when I got home there were 2 shoes for the right foot ONLY! NO LEFT SHOE. So my husband went today to exchange and get the correct pair without the slip cos I lost it and was informed we can't be assisted and rhats our problem!!! I mean since when do shoes get sold as right foot ONLY in and or left foot ONLY in a box?? And furthermore i asked my husband to show them my transaction history from my bank app stating clearly a RAGE transaction for the same shoe price was processed by the bank. And then when I called their customer service I was told I can't be helped cos I have no receipt. So their incompetence to have the right shoes in a box must now cost me??? And because we had a wedding to attend my husband ended up swiping again for another pair...but above is the treatment we get for being customers at Rage. Im highly disappointed for such neglicence and lack of care.