VW South Africa

I bought a new 2013 VW Tiguan at VW Tavkor George. So I took my vehicle yearly for the services as I drove not a lot of Kilo's per year. As per my Service book I need to take it 12 Feb 2014 and it shows next one is Feb 2015. Then I took it 20/01/2015 and it show next one is Jan 2016. So I took it 08/02/2016, next date is 08/02/2017. Took it in 22/03/2017 and shows next March 2018. When I took my vehicle in for the last free service in February 2018 the Consultant at Tavkor, Alta phone me to come ande collect my vehicle. I can only service it in March 2018, and my service plan expire 26/01/2018, and the service will be for my one cost. I am very disappointed, nobody told me it must be before a certain time, or documents stated it. Until now I not even had a major service and feel I was really unfairly treated. Can someone give me an answer to this as this is not an experience to promote further. I am a widow, not knowing much about cars and the people with the information also didn't help me right. I feel I needed to be treated better, as VW save a lot of money on my services, and I wasn't advised correctly, they could have told me with the 2017 servise there is a cut off date, but no they didn't, I feel this is not TCF.