Disgusting service

Hi, we bought a 2020 Mazda CX3 from Londiwe at Sunbeam cars, the vehicle had 48000km on the clock, according to Mazda the vehicle has to be serviced every 15000km or annually, the car had not been serviced since 2021, I took the car to Mazda for its 45000km service, the drivers seat belt adjuster is broken, the I stop lights keep flashing, there is only one remote, the climate control lights don't work, nor does the air con, I keep phoning about this, they are not interested in assisting, Londiwe keeps giving me excuses