Samsung substandard repairs

I have a samsung fold 4. Before the expiration of my contract the screen required replacing because of a crease. The umhlanga samsung service centre did the repair. Within 6 months the crease is back ! On notification to the samsung care centre i was told that the repair centre should have notified me on "how long the repair would last". This is pathetic. I am now required to repair at my own cost with little assurance that the quality of replacement will be honored and that i wont be in the same predicament. The quality of Samsungs replacements is highly sub standard. Spoke to Nomazizi the case manager (the voice of the customer complaint) who responded that the repair centre should have notified me on the longevity of the replacement. The case was closed. Total hogwash! Linda from the cell phone department advised i should contact the ombudsman.