Cannot even check availability for a customer

I have been trying to call their number, both the shop and head office, to no avail, I have also sent an email to which I got no reply to, then I sent a message on Fb, and I did get a reply there, but was told there was no way for the person on Facebook to check the stock on his/her own store, as they had to direct contact with the store, although they had contact with the supervisor of the store, but still would not ask about stock availability for me. I think that is the smallest act of customer service, why have a FB page if they just simply say they cannot help?