Unhappy client of Medihelp!

We are with Medihelp medical aid and we are NOT happy at all. We started with them in 2013 on a certain plan. Yesterday I got a R4000 dental account because my medical aid did not pay. When I phoned the dentist office they informed me that my medical aid savings account was finished, but on the plan we originally took in 2013 we had dental cover so why take make money out of the savings? When I phoned Medihelp they informed me that they have changed my plan in 2018 to a hospital plan with a savings account!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! They say that they have send an email in October 2017 that Medihelp is changing their plans! I have not once received that email or a sms or a follow up email or even a call from Medihelp to make sure that I did receive the email and to make sure that we as the clients understand the new plans!!!!!!!!!!!!!!!! It is a disgrace that Medihelp is eager to take my monthly premium of nearly R4900 but can't pick up a phone to contact us as the clients!!!! When I spoke to the lady at the call center of Medihelp she said that it is my responsibility to make sure that medical aid will pay???? But was is it not the medical aid responsibility to make sure that we as the clients get informed properly about any changes to our plans??????????? I will NEVER recommend Medihelp to any one!!!!!!!!!!!!!! They have no custom care services!!!!!!!!!!! And I still want to know who are gone pay the dental account??????