Hello.
I'm trying to apply for one year visit visa multiple entry. I'm entering all the data, attaching documents and it says the applications have been received and validated successfully. But after I proceed to payment and enter my debit card details to pay for Visa processing fees 4 bd to complete my application, it says your transaction was unsuccessful, please check your details and try again, although I know my card is working. I purchased other things with it.I tried many times, still shows the same. What could be the problem?