Very bad service

I have been a client for quite sometime and have being experiencing great service from FNB however lately I have experienced extremely bad service from FNB. Today I called the call Centre and spoke to Mpho Mokgaotsi and what an attitude She gave me and turns around and says that I gave Her bad attitude. She eventually called a Team Leader by the name of Shimane Diseko who managed to come me down and said He will listen to the call and take it up however none of them (Mpho/Shimane) took my name or contact details and I'm wondering how are they going to get back to me if they don't have my details. In a service driven industry I don't think these guys are doing well. I'm really shocked and disappointed at the service I got today