Jojo tank pump faulty

Worst service ever from management, they don’t want to replace / refund my Jojo tank pump that is less than 6months , Im being refered to their supplier which I never had a sales agreement with who is very rude .. and worst customer service ,and they blame the plumber they recommend pipes to replaced by the plumber which was done but still we had issues , my neighbour has the same machine with no issues , I had requested them to change the machine with the bluntly refuse and taking me from pillar to post , I believe if I’m not happy with something that’s still under warranty the shop where I bought it from should either replace or refund not refer me to the supplier I don’t even know what agreement and arrangement they have .. I made a sale at the shop not the supplier ..but they are unable to replace their damaged machine and they blame loadshedding which I’m not affected by since I had installed solar system since .. your customer service sucks big time ? Never buy Jojo tank pump from Plumberama..