Bad service from medical aid

All I asked from Momentum is to change my debit account I send the paperwork through on the 8 February already and after not hearing anything from Momentum I decided to phone and find out. After this way and that way and many phone calls and *********** people not helping. Today I was told they can only change my debit order on the 1 March after I asked that the new months premium from my husbands account since I am not working anymore. This is the worse customer service ever and I am going to switch to another medical aid that has customer service.