URGENT

I am trying to get hold of them but I am battling, they gave us an sms number to use to book an appointment but no one responds or gets back to you....you call their toll free number and they keep you holding for long...I have been getting SMS's every day that I need to contact them regarding a 2019 returns via e filing but I'm unable to do it on the system because it's not showing and I can't go to SARS without the appointment...so I am humbly asking for a person from SARS to assist please.