Bad vodacom service

I took out a contract with vodacom and took the Samsung A72. In the first 2 months the phone's charger block broke and I took it in for repairs. All went well, until about 4 months later and same problem recurred - the phone did not want to charge, again. I took the phone to my vodacom shop and asked for a device replacement, as this was the second time that this happened. I was unable to backup any info as my phone did not want to charge, so I asked them to not remove the data from the phone. They told me it was sorted and that I didn't have to worry. It's now 3 weeks later: Vodacom doesn't want to replace my device and they wiped all my data off my phone, which includes the birth of my son, my engagement to my wife, documents of my process of buying a new home and every picture I have ever taken... gone! The best of all is vodacom head office blames the shop and the shop blames vodacom head office and here I am without a phone, still waiting with no feedback after 3 weeks. This is the worst service I have ever received in my life. If any one can help me or give me advice, I would greatly appreciate it. I am at my wits end.