Discovery Health not doing their JOBS!!!

I took out the Health insurance for the second time (key care plus) yet again Discovery failed me as a client they were suppose to sent a debi check for payment and it didn't come through from them then I spoke to them where they assured me that the payment will go off and it did not after that they sent a message to say policy benefits cancelled and today I get messages that debit order will go off 1 st of March. Now Discovery how do you want to take money from people after you cancelled the policy because you couldn't do your Job. I expect you to take down my details on your system as I surly don't want to be a client with you.