Pathetic customer service

I resigned from my job early 2024 and took my provident fund from Sanlam. In December I received notice of a penalty from SARS for R300 and some change because Sanlam did not submit my IRP5. I called SARS, they advised me only Sanlam can sort it out. For the whole month of December I have been making calls and sending emails to Sanlam. I wait 20+ minutes on a call until I eventually run out of airtime. I sent several emails requesting calls backs and filled out the sheet on the Sanlam website several times requesting a call back from them and all I receive in return are auto responses advising me someone will contact me within 24-48 hours. It’s been a month that I am waiting and I have no response for SARS whatsoever because Sanlam are the only ones that has my IRP5! Service is pathetic!