Worst service ever in medical industry

After a month of complaining first about the mistakes made with the actual blood tests, I am now struggling to get an account sorted. The Accounts Department thought it would be best to ignore any queries. On 17 February 2016 I had to spend 32 minutes on the phone (for my own account) with a guy called Ashley Volmink, who promised to get back to me and to provide feedback. I mailed him again on 19 Feb 2016 requesting feedback, but was ignored. The branch have tried to make contact with the Department, no luck at all, all correspondence is just blatantly ignored. All I want to do is to sort out my account, make the payment and forget that I had to deal with this unprofessional company. I can't even say it is poor service, as there was no service at all up to date. The department is quick to send letters if the patients don't make payments, but how are you suppose to make these payments if even begging for a statement brings you nowhere. I am sure I will once again receive no feedback at all, I think I just wasted even more time writing this complaint.