Shocking service, passing the buck, lost emails, empty promises, lies

I have never complained on social media but I suppose there is a first time for everything. I have never ever felt so completely let down as I am now. I have been a member for almost 4 years. I had an in hospital procedure done on the 2nd May and was approved R20 000. I had to pay a R3000 bill upfront and was told to submit the invoices to Oneplan in order to be refunded, that was on the 8 August. Almost a month later they have lost my email, I had to re submit it to two different email addresses. I've been told three times the matter has been escalated. I've been told six times that a manager will contact me. I've been told by the claims Dept that they are going downstairs to discuss it with the manager. I was even told that a member of staff will stand by and watch the manager call me so that I receive feedback on why I'm still waiting to be paid. Not one phone call received to date! Oneplan should be ashamed and embarrassed that they conduct business like this. I have never in my life experienced such blatant lies, bad service and down right shocking treatment!!!!!!!