Bad service

This morning I went to Standard Bank branch in N1 City where there was a lady who helped and was very friendly. Because there is certain services which can't be done in the bank she had to put me on the phone as I received a message on 1/10, 2/10, 4/10 and 13/10/2021saying the negative amount on my account is R2 265.52 and where it also showed that I had two accounts with the bank. I held on the telephone for 1 hour with no assistance. I want to know why the sms's was sent out that my account is on a negative I had to come and get that big negative still on my account. Is that the way Standard bank try to trick their people. If you need me to forward the sms's I will. I hope someone cam give me a reasonable answer and not a story made up in the spur of the moment.