Lack of service!!!!!

I am absolutely disappointed with the lack of service I received from discovery. I am on the keycare plan and I've been trying to do my keycare income verification since January 2023. Whenever I call discovery there's always information outstanding. I have paid over R12000 in premiums to date and I'm being overcharged whereas I was supposed to be on the lowest income band. They've defaulted me to the highest bracket but I've provided both my payslip and bank statements on numerous occasions as well as an affidavit. I called the call centre numerous times and not one consultant has called me back. It's the most unprofessional company I have come across and my membership is now on hold again after just paying an amount of R4000. I think the staff is highly *********** and I have email trails since January where I have submitted the relevant information as requested. It costs me out of my pocket for their inefficiency and this is highly absurd