Payflex no feedback.

All four payments were made I enquired as to why my account shows nothing is outstanding via the app and online but receiving NO feedback. I have sent 3 emails with the proof of payments attached over the past 2 weeks to rectify the matter with NO response. Today I receive an sms stating my account has been handed over. There is no contact number on their website. Only email address' which obviously isn't getting attended to.