Extremely disappointing customer service from Payflex

I have emailed Payflex numerous times over the past two months regarding an important issue, and I have received no response whatsoever. I need to change my email address because I no longer have access to the email address registered on my account. Unfortunately, there appears to be no contact number, no working WhatsApp number, and no effective way to get assistance. What makes this even more frustrating is that comments appear to be disabled on their social media pages, leaving customers with very limited options to get help. Two months of trying to get assistance with a basic account issue is simply unacceptable. I understand that companies can be busy, but completely ignoring repeated customer enquiries is not acceptable customer service. Payflex, please provide your customers with a reliable way to contact you and actually respond to support requests. I would really appreciate someone finally getting back to me and helping resolve this issue.