Lies, ***** and unprofessional repair centre

Cell C Repair my phone twice and still not working. I phone in the repair center and they claim an lie and must take it to Cell C store to prove its working. Cell C full of lies, ***** and useless people. Cell c is giving Samsung and other phone brand a bad name. Every time I tell the full story no one helps but say it's need to be investigate, then why say the calls are recorded.