Fnb takes our interest

On the 20th of December 2022 I received my money from my first house that I owned for 21 years that I sold. I received a call shortly after that form FNB investment team. After the option to invest the money I asked them to phone me back, so that I could discuss it with my husband. I never got a call back. I was not told that if it lays in my checque account that I would not earn interest. On my savings pocket and credit card I earn interest so why would I not earn interest on my cheque account. This is my main account. It is unfair for FNB to get the interest and not pay it over to us.