Avoid Masterparts.....completely!!!!

Bought a fuel pump for an Opel Astra, 2005, 1.6 model. A month after installation the gauge packed up. Reported it to my mechanic who due to health issues could only attend to it later. I have proof of when I reported it. Masterparts however refuse to honour the warranty claim. I have have not done more than 4500km with the part in place. Pathetic, useless, and no client satisfaction approach.