Vodacom shocking service

Worst service ever. Samsung Z Fold went in for repairs 2 months ago. They fixed the folding mechanism but when phone returned I am unable to make calls or use data. Have been dealing with Constantia branch and Maitland technicians but nobody seems to have a clue what the problem is. Constant promises of assistance and escalations but unless I make contact nobody gives feedback. Latest when I asked what was happening as my device had been sent back for the 3rd time last Monday 21st October nobody could answer where my phone had been for last week but somehow ended back at store instead of technicians. Terry who was supposed to be following up on loan phone has also now gone on leave without getting back to me. The last time I had a working phone was Mid August. I am paying approximately R1700 per month for a device that I have not had or when I do does not work. And I currently have no clue what is happening as all Eugene at Maitland says he needs to send to Johannesburg now for further assessments. Pathetic service Vodacom!