Disappointed and frustrated!!!

Myself and my husband attended at Dischem (18 May 2017) to undergo the Health Screening Benefit (which we prior thereto confirmed with Fedhealth that same would be covered and paid for under our scheme as one of the benefits). On submitting the invoice received from Dischem to Fedhealth, I was informed that the code on the invoice was incorrect and that I needed to go back to Dischem and obtain a new invoice. Dischem informed me that they could not regenerate a new invoice, but confirmed that according to their system, the code supp**** was correct for the Health Screen Benefit between Dischem and Fedhealth. I contacted Dischem on numerous occasions to confirm this and they still confirmed that this was the correct code. I have phoned and followed up on numerous occasions and have waited excessively long for any feedback from Fedhealth. Fedhealth has now confirmed that my claim will not be paid as the code is incorrect. I am of the opinion that they should assist with this as I don't think I am responsible for obtaining the correct code, and especially since this benefit is covered under our specific scheme. Very frustrated and disappointed with this service from Fedhealth.