System not generating appointment page after making payment

Good day

I made an application for a visitors visa at VFS Global South Africa on the 26th of March 2019 and made payment on even date.

Upon making payment the system did not generate an invoice or permit me to schedule an appointment which has now prejudiced me as to date (31 March 2019), I am still unable to schedule an appointment.

On the 27th of March I sent an email and made a telephone call and was informed that it takes 24 hours for VFS to respond to me. To this date (31 March 2019) I have not received an email from VFS.

The conduct by VFS South Africa is highly prejudicial to me and I would appreciate urgent feedback.