Poor Service From NTT Suzuki Bloemfontein

I have a 2019 Suzuki Ignis which was purchased in Bramley Johannesburg. I reside in Bloemfontein and in 3 years have taken my vehicle to NTT Suzuki Bloemfontein for its service. Now that it must go for a 30,000 service we are having problems. The vehicle was taken in for inspection (I have a Service Plan) and am still waiting to hear from them when to take the vehicle for its service. The service book was not signed or stamped after the last service in November 2022 and when reporting this they signed and stamped the book. Today 15/08/2023 we had a call from Chelsea to inform us that they could not locate any details of the service plan (the previous service was done by them too, on the same service plan that they cant seem to find now), also nothing on there system. How can this be possible if the Ignis has been serviced there. Monty promised to get back to us yesterday which did not materialise.