MSA Funds

On Monday my current company wrote to discovery to notify that they would end paying my premiums as from the 01.03.2019 there after I will take the medical aid on a personal capacity. Meaning they will still pay on the 28.02.2019. Today I went to the doctor and there were no funds on my medical aid and when I called discovery they told me that up until I give my banking details they have put my funds on hold. I was so disappointed and hurt as no notify me about this. I looked like a fool and on top I had to pay cash that I did not even budget. Communication is very bad where discovery is concerned. I dont understand why you would take away my funds if I am still paying as per normal. I want discovery to resolve this ASAP I have sent the form with my bank details already.