Faulty stove top

Purchased a defy stove top in July 2022,2 months later the housing for the plates started to bulge and it was impossible to cook as the pots couldn't sit flush on da plates,1 plate also stopped working.Called makro numerous times and was told I'm not on the system n the can't pic me up,they gve me the run around til March 2023,sum1 came tru and replaced the housing.Same story,the housing is bulging again,I have sent numerous emails to makro and to date,no1 has contacted me.The most *********** bunch of people in customer service