Plan downgrade

I contacted Discovery Medical Aid via Alex Forbes who were my brokers when I was employed for a plan downgrade on 17 February 2016. I was asked to provided UIF details of my retrenchment, bank statements for 3 months and an affidavit confirming I have been retrenched since June 2016. My premium at the time was R5397 pm. A certificate soon followed confirming the downgrade from 1/3/2016 to the Key Care option at the cost of R3932 pm. I was not happy with this and requested it to be relooked at because the income bracket which i was now placed on according to the certificate was between R10000.00 and 1M. I called them again and was asked for more info. I gathered all that info once again and got yet another 2 affidavits along with bank statements from my husband and sent that back to discovery now dealing directly with them. My account has since been debited with the original amount of R5397? Discovery what on earth are you doing? Refund me immediately and stop *****ing from your clients who have been loyal, honest, truthful to you over the years. I Have explained that I am not working, I have provided all the necessary paperwork. I was quoted the amount of R1938.