Appalling Customer Service

I placed an order via the Zando app this week, only to recieve an email to say my purchase has been unsuccessful. The purchase total however has been deducted from my bank account

I have called their customer service number, emailed them numerous times , DM'd them on their Facebook page, and as a last resort, left a message on their timeline. I am yet to recieve any follow-up communication from any of the channels.

It truely is the most appalling service I have ever experienced. In the interim I am out of pocket with no resolution insight.