Software update

My cat phone went in for four times with the same problem. All that is done on vodacom repairs is software updates. After two days the same problem persist. Yesterday I was told that CAT should replace my phone. My question is: with whom do I have a contract? Vodacom or Cat? My contract was renewed this year in May which I chose the CAT phone. I have 5 other contracts with vodacom. Software update is the only excuse constantly. I have to travel 50 km to Vodacom Nelspruit and back and be without a phone for nearly 2 weeks. Is this the new type of service we as vodacom customers get from vodacom? I have to phone and have CAT replace my phone? Everytime I have to update all apps and install all my apps all over which is also a cost towards myself and Vodacom cant even help me to correct the problem. It is rediculous for a brand new phone to have to go in for repairs 4 times within a 6 month period. Why do we have to complain here at Hello Peter just to get the proper people to address the problem. NO Customer SERVICE at all