Universal Healthcare and Tiger Brands medical aid shocking customer service

After requesting Universal Healthcare / Tiger Brands to reverse a claim which they agreed to as incorrectly submitted by "Medicross Rangeview", Universal / Tiger Brands Medical aid now say they cant do this due to "Lab codes", this after numerous calls / e mails to { Valda Davies and Brendon Ratfhilumelo.} One cannot get through to a manger or supervisor to assist with a simple matter, you have to speak to the call cntre operator only who WILL NOT PUT YOU THRU TO A MANAGER / SUPERVISOR, all you are told is that the request has been sent to the relevant assessors dept which you are not allowed to talk to personally to confirm, I have paid an amount to Medicross Rangeview of R 2022.80 and the balance is an amount of R 4678.80. Medicross have submitted the new reduced account of R 4678.80 as per med aid request! I am perplexed as to the lack of customer service given by the Universal and Tiger Brands, saying that they will do the payment for the total of R6914.70 and not the reduced /correct amount. I have been with Tiger Brands since 1996 and will definitely be looking at other options in the new year.