I am flabbergasted by the Service of Suzuki

I called and made a booking for a service and explained that it was going to be paid for by Innovation, they gave me a Saturday(7th March) and they said they will call on Friday to remind me but instead sent me a WhatsApp. Got here and I was told that an agreement was supposed to have been done by Suzuki and Innovation during the week because Innovation doesn't open on Weekends. I wasted my petrol and time to come here for nothing,I am beyond being disappointed by Suzuki