Pathetic service and lacking responses

I would give a zero if possible. An online special was up for at least 18 hours. I purchased the special and placed a 2nd order using my store loyalty credit. Both orders were successful and my money deducted. Due to an alleged system glitch, Dischem are refusing to honour the order. They have however honoured some orders as late as 2 days after refusing to honour mine. Their social media and email line either ignore you or provide pathetic generic responses when called upon for answers. I have asked for an escalation which I am still waiting for. I want my orders honoured and not to be discriminated against, but worst of all, despite Dischem ELECTING not to honour my order, they have not processed the refund. They are happy to take your money then backtrack and hold onto customer money with no consideration for the fact that these aren't luxury goods and are a necessity for babies.