Digusted with service from CAT phones and Vodacom

I received my upgrade phone a CAT S31 in January 19 after a week the phone started giving problems, I took the phone back to Vodacom for repairs which they duly did, after a few days the exact same problem reoccurred, the phone went back another 2 times with the same result , I was then told to go directly to CAT for them to sort it out, Cat sent the phone away three times for repairs and the phone still has the same problem, I have now been told by CAT to go back to Vodacom for them to replace the phone. I am totally disgusted with the service I have received from both companies. I have been a loyal customer of Vodacom for over 25 years and Cat for 6 years and if this is the service I receive I am definitely changing my suppliers