BAD CUSTOMER SERVICE

I bought a Premio x83 June 2021 from ackermans maponya mall,ffrom day one the phone had a habit of switching itself off at battery 70%, I even thought it had to do with phone settings 4 months later the battery is fat and it doesn't operate without a charger. The phone is still new not broken the problem is just the battery. 13 October 2021 I went to Ackermans bree street branch and explained my situation to Musa he told me he can't help me coz I did not buy the phone from their branch I should go back to maponya mall Ackermans he can only book it in but it's gonna take 6 months and then I left and went to the Ackermans branch inside the centre near mtn taxi rank and explained my situation again to Faith she told me it's no longer Ackermans problem its PREMIO's (company) problem I should book it in but they won't fix it if I broke it.... I after I gave her a long explanation that the phone is not broken the only problem is the battery, I didn't get the help I needed.