Loyal customer with 30+ orders suddenly limited to "Pay Once" only - No support response

I have been a loyal PayJustNow customer for years with more than 30+ orders, all paid on time without fail.

For the past few days, my account only shows the "Pay Once" option at checkout. I no longer have the option to pay in 3 instalments, even though I have no outstanding debt.

I have tried emailing *** several times and tried calling *** with no response. This is very frustrating.

Please can someone urgently check my account and restore my 3 instalment facility.

I have always been a good paying customer and I would like to continue using PayJustNow.