Unsatisfied angry customer

I'm honestly not happy at all with Bosch service at all took my car in for service on December the 8th 2020 and my next service is due 8th December 2021... 5 months later my engine light goes on then took it to get fixed fast forward to the 18 of June 3 weeks after taking it to them the problem is temporary fixed now my engine light is back on so clearly there is something that is not being done on my car I'm honestly not happy with the service I'm getting