Refuses to give my refund!

Worst service ever! They cannot assist me with fibre and they refuse to give my refund, they send me from pillar to post looking for a receipt from Netcash that I have not received. Called Netcash and they also advised that hypa is supposed to assist me with that and not them! Payment was made for fibre internet on the 1st of November, they advised that there is an issue because there is an existing line. They "Apparently" reached out to openserve but guess what, I HAVE STILL NOT RECEIVED ANY FEEDBACK. I HAVE NOW REQUESTED FOR A REFUND AND SENT ALL REQUIRED DOCUMENTS AND GUESS WHAT THEY ARE NOW PUSHING ME AROUND TELLING ME I NEED A RECEIPT FROM NETCASH, I AM NOT A CLIENT OF NETCASH HYPA IS A CLIENT OF NETCASH. I SPOKE TO THE RELATIONSHIP CONSULTANT FOR HYPA AT NETCASH AND I RECORDED THE INTERACTION WHERE SHE ADVISED THAT HYPA IS SUPPOSED TO ASSIST ME WITH THE POP!!! I WANT MY REFUND HYPA