Discovery over billing & suspending account wrongfully

Good day

I have taken a medical aid for my mum, she does not work and gets government grant every month, Discovery Health requests every year that we provide proof of income and bank statements which we always provide towards year end, last year 2018 yr end they did not request these forms, so we thought all is in order. They then call my mum at the beginning of March for info, which she has now sent in twice, they now stopped my mums medical aid due to not sufficient funds as they went ahead and increased her med aid from 1675 to 3370. this is absolutely ridiculous that they don't do their jobs and answer emails when we sent the proof of income documents twice, I am sick and tired of Discovery ripping elderly people off on extremely med aid installments, they took my mums 1675 and is now insisting for the balance and now suspended her medical how pathetic is that, when anything can happen to my mum and she does not haver cover, I will take Discovery up and I will right an article to the media and Ryan Noach to inform him that Discovery are rouges and rip old people off for their money and his staff is ***********. I would like this sorted asap and want all my mums forms loaded, the med aid installment back down to 1675 and I want sorted asap and her med aid re-instated.