Nonsenses Medical aid

Medshield has been giving me a lot of challenges for past 5 months, am currently running a dialysis unit based in Jane Furse(Sekhukhune Area). I have a been providing my dialysis services to medshield client who is pensioner for past 5 months without fail. I have been giving her the same service as others clients from other medical aids who pay me for my services. Now month in and month out when I send through my claims through to medshield they reject the claims and I been given false promises of payments to be rectified but nothing has been done. Medshield has also requested their client to pay me a 35% co-payment for the consultations because their are using my services, and am not their designated service provider(DSP) which i find it ridiculous. How come other medical aids made me their DSP for the type of service that am rendering to their clients. This medical aid is inconsiderate because they expect their client to travel plus minus 150km to their nearest DSP and spent R300 on travelling costs per treatment mind you this client is a pensioner staying in the remote area. I find it distasteful and unprofessional for a medical scheme such as medshield not to remunerate a service provider whom their client has been in our care. Personally, professionally and as a business I have exhausted all avenues to recoup what is rightfully mine for the past 5 months.