DISCOVERY - MAKING CHANGES WITHOUT ADVISING CLIENTS - BAD SERVICE THESE DAYS

I have visit our GP (Dr J.I le R van Niekerk & partners) which we have for more than 20 years in June. Our medical aid (DISCOVERY) savings account has been depleted but normally Discovery day to day benefits covers the GP visit. Then I receive their statement in the amount of R434.18. Not sure why I am receiving this, as I know we have not used the Day to Day benefits, I call Discovery. The lady then tells me the Practice is not registered under their day to day benefits, very upset cause the Doctor's office did not advise me of this change I phone them, only to discover that Discovery removed them and did not advise them nor the clients of this new development!!!! We have always used this GP, and I know for a fact this practice service a lot of Discovery clients, why on earth will Discovery remove this practice for their day to day benefit???? It is just insane, cause we as the clients should have a say!!! After all, we are paying a hell of a lot of money for medical cover. And who do they think is now liable for this payment??? I honestly don't think it should be me, I was not advised of their stupid decisions, should I have been aware of this, surely I would have rather not gone to the doctor. They are really going down, service and all is not what it used to be. I have put my oldest child on the Key care plan cause she turned 21 and have had problem after problem even here. Really are considering to look at other medical aids, this is just enough. If it is not this then its that, and what about the clients??? Where is their interest taken in consideration?? Discovery will have to pay this account, as I will refuse, this is not my mistake, and honestly, rather put the doctor back on your Day to Day benefit, cause if you have to ask the clients, a lot will insist, as a lot of Discovery clients have been using this doctor for many years. URGENTLY correct your mistake!!