VODACOM REPAIR INCOMPETENCE

I recently upgraded and got a samsung s9 from vodacom lenasia, from the very first day of use the battery on the phone was faulty and would need to be charged atleast 3 or 4times a day. I immediately sent it back to vodacom lenasia who sent it to the repair centre. I get the phone back and still the same problem. I resend it to vodacom repair for another 2 weeks and get told that there is no fault on the phone or battery yet it keeps doing the same thing. Am extremely frustrated and unhappy as i am sitting with a brand new samsung s9 that cannot even be used. I wonder how many others have experienced this im done with vodacom will be taking this further with the ombudsman