Not accepting my internet banking payment

Made my monthly payment via internet banking, as I have been doing for years, in April. When I received my May statement, it showed that no payment was received and I am in arrears. Emailed Edgars with proof of payment. Nope, not good enough for Edgars. I had to contact my bank and get confirmation that the payment was made. Got emailed confirmation from my bank that the payment was made to Edgars. Emailed the bank's confirmation to Edgars. Nope, still not good enough for Edgars. Now they want my bank statement. Emailed document. It is 12 days later and not a word from Edgars. So what now!!