Useless service received from Sanlam Investments.

I received a message from the Sanlam WhatsApp platform stating that I had not made a lump sum investment in my Central Retirement Annuity Fund during the last 3 years. I rep**** that I had actually made a lump sum investment every year by debit order that they processed every year. I also received a tax certificate confirming my contributions every year. I tried to phone them, but I could only get hold of a useless BOT, regardless which number I phoned. They eventually, after asking questions that I had to answer orally, put me in line to speak to an agent. However, I hung on for 15 minutes, by which time they discontinued my call automatically. I eventually found a way of leaving a message requesting them to phone me back. Eventually Tandeka phoned me back. She listened to my problem about the weird WhatsApp message. She then said that she is in another division, that she could not assist me, and that she could not put me through to the retirement annuity division either. I thanked her for being useless and rang off. The whole experience has left me thoroughly disgusted with their service. They wasted my airtime and I am still no further in sorting out my problem. They only supply their numbers that are manned by a BOT (the same bot) and that have very few agents to talk to. How can a large company as Sanlam be so extremely useless?