Soundmatch

I installed a system at Soundmatch Bellville on the 17 March 2021. Paid over 7k. Days later my subwoofers kept switching off aswell as the amp. I phoned another Soundmatch and they advised the amp the other store fitted wasnt powerful enough. I went back to the Bellville branch and they advised its not the amp but the box they built. They then rebuild a new box and it was okay for a few days until it started to happen again. I then bought a stronger amp and it hasnt switched off once. Soundmatch so called expertise is ridiculous.