Payflex - Bad Experience

I tried to make a purchase with Payflex thrice but the message "WHOOPS! SOMETHING WENT WRONG". After the third attempt, I quit and completed my purchase through another channel. I then received an email from Payflex that the purchase went through. I immediately contacted the vendor who confirmed that the purchase didn't go through via Payflex but through the other payment channel. I contacted Payflex (Nqobile) via email. I was asked to contact the vendor. I responded that I already did and sent confirmation that the order didn't go through. Since then, I haven't received a reply from Payflex. I tried to contact them five times via email and telephone. I held on for about 30 minutes at a time but never got to speak to anyone. This is highly unprofessional. I must add that Payflex did debit my account.