Very bad service and website have 'glitches'

I bought 5 of the same dresses on 28 Jan 2018 from Sissy Boy for my brides****s. 2x I bought at the Clear Water store and 3x I bought online while I was at the clear water store because they didnt have enough in stock at the store. Weeks passed and I didnt receive my delivery, I followed up twice and eventually they rep**** saying that unfortunately the dresses are out of stock. They said that they will refund me for the 3 I bought online, I asked for a refund for the 2 dresses I already bought instore also because I cant do anything with just 2 dresses. I have 5 brides****s. They refused to refund the instore dresses and said that its policy that clothes get returned in 7 days. Very rude Nazneen from the online department admitted over the phone that there was an online 'glitch' on their website, misrepresenting the amount of dresses. Yet Sissy Boy still didnt want to refund me for the 2 dresses I bought instore. My argument is if Sissy Boy notified me in 7 days after I made payment that the dresses I bought was out of stock, I would have returned the 2 instore dresses on time. I will never buy Sissy Boy again. The customer service is terrible and website information is not correct. Will def spread this event via word of mouth.