Worst Customer Service!!! Really Really unprofessional!!!

Worst Customer Service!!! Really Really unprofessional!!! I bought a Ps4 at Game Mokopane 1/10/2019, with the latest update the Ps4 didn't want to update,we tried everything but with no success. On 21/9/2020 we took it to the store to send it in for repairs. Slip,box etc was provided. Ps4 was sent in,confirmation sms received,all good. On 8/10/2020 I received confirmarion that it was back from repairs. My husband went to fetch it on 10/10/2020, waited 30min,someone came and assisted, brought Ps4 and asked to sign. He asked whether they fixed it or what was done,then only did the guy assisting checked the papers and informed that it wasn't repaired actually, they couldn't see the date of purchase at the repairs. Is it my fault? Why didn't they reprint the slip? All Retailers work on a Pos system. So if we didn't ask,they would have let us leave with the faulty Ps4 and obviously it would have been out of guarantee when we returned Again! This is totally unacceptable. Now my son has to wait another 21 days... Why wasn't procedures followed? Why didn't they inform us? I need Urgent feedback !