Embezzling money from customers

Extremely bad customer service. Embezzling money from customers. We purchased a vehicle from Auto Pedigree Pomona in 2019 with a maintenance plan. we subsequently needed to take the vehicle in for a service only to discover that the maintenance plan was never purchased even though it was on the invoice. I subsequently contacted the dealer principle multiple times who kept on having excuses as to what is going on. I've sent facebook messages to the head office who also responds in saying someone will contact us which has to date still not happened. We had to pay the services out of our pocket and subsequently the maintenance plan we have lost the entire R10000 which we are still paying monthly on installments