Sizwe requesting given information and avoiding claim payment.

A few weeks ago, I complained about their total lack of communication and did receive some. But now I have a new complaint about shirking payment. I had to regularly attend a wound clinic from 7 August to 10 October, at least once a week, some times twice a week. Sizwe ignored my submitted statements until I started to throw my toys again and now (but only on the ONE statement) are sending Email after Email requesting information that is present on that one (of many) statement. They are procrastinating and obviously trying to avoid payment to me (the main member) by simply not doing their job and reading that one statement (they have requested ICD 10 code, service date, amount claimed, etc) which is all on that one statement, in fact it is on all the statements that I submitted in this regard, but they are only focusing on that one, making it a major, prolonged issue and headache.