mango took money, but no ticket - impossible to get help from them

I often travel mango and have found their flights to be good and mostly on time. However, something went wrong with the website while I was booking online. The money was taken from my account for my ticket, but my booking does not exist! It's almost impossible to contact mango. I've sent 6 emails with no response. I tried phoned, but after holding on for a long time, they couldn't find my booking and directed my call to accounts. But I held on so long that I gave up!