Total lack of customer service

I have just spent over an hour on the phone trying to get hold of Sanlam pensions department The IRP 5 that Sanlam issued to me contains a free text input in the field that must be numeric. SARS have rejected the IRP 5 and as a result it cannot submit my tax return Ten days ago I explained the problem to a consultant and was asked to send an email setting out the error message supplied by SARS. I did this and today tried to follow up as I have not received a revised (corrected) IRP 5

I am now stuck. SARS are not accepting an incorrect document prepared by Sanlam and yet I can't even get them to answer their phones!

What am I supposed to do?