Poor Quality issue for parts used in Tiago Ev

I am writing after using my Tiago Ev for almost 6 months. I am not satisfied with the quality and mechanism of the charging point lid (fuel cap). The quality of the lid provided is very poor, the hook which is supposed to get latched to the plastic part often bends because of this lid often gets stuck or doesn't get closed. Service centre people are fixing it but fix last for a few days and problem remains. The technician at the service centre mentioned it's known issue for Tiago Ev ... Not sure why Tata Motors not providing a permanent fix. For me, parts of the lid already started getting rust (within 6 months).