J R Contracts in Wigston

We bought a multi use log burner from jr contracts costing over £700 but after 6 months when all rusty. I had to take fire out myself take back and they sprayed it but soon started going rusty again just the door they sprayed it again but still went rusty again. Took it back again but this time was just met with abuse and was going to kick me out very brave as I am 72.