Extremely poor and unknowledeable communication from Vodacom Shop Fourways

I upgrade to a Samsung Note 9. Within 6 months the camera was not working and the speakers were blown. Apparently Samsung mandate a software upgrade for any work done on a phone under warranty. I was told by the Vodacom Shop Fourways that if I did not want the compulsory software upgrade the phone would cost approx R4000 to fix. The phone was duly repaired and I lost all my WA data as no-one advised me re backing this up before the software upgrade. Samsung Smartswitch is a riddle in any case but evidently does not backup Whats App. The phone was returned with no back up data reinstalled I had to visit each of my banks in turn to get the bank Apps working again and was a mission to get other Apps working again such as Outsurance etc - in short cost me about 2 days off work - and they remove the shatterproof screen which cost another R500odd to replace Within 3 days of the camera repair the camera was not functioning properly and within 2 weeks the speakers were blown again!! So either the repair work was not done satisfactorily or the Samsung product is faulty albeit on their best phone I had a Note 4 before the Note 9 - still working properly after 6 years!! The challenge is now to get the phone repaired again and go through the laborious task of reconnecting the Apps again - another 2 days off work?? I am informed that one should not take this phone to Vodacom to repair - take it to Samsung- but at any rate extremely poor and unknowledgeable communication from Vodacom Shop re backing up your data - and possibly the repair itself