RENAULT BAD BAD SERVICE TO " VALUED CUSTOMERS"

We bought a brand new Renault a while back, we also included a service warranty, the car went for the 15000 km service no issue as this was done in the stikland service center in Bellville, no issues good service etc. Now my car needs to go for the 30000km before the 2years or 30000 km service plan expires, I have been getting calls daily to ask if I want a new one before the current one expires, but here is my issue.

I have been looking for the service center in Stikland only to be told that Renauld has now amalgamated with Nissan and that I should call the Tygervalley branch on *** to find out if the warranty is still valid and when I can bring the car for its 30000km service

Well what a mission, not only does it take forever for someone to pick up the phone , then only to be rerouted to someone else and then the call goes dead, this happen 6 times today, I am very disgusted and frustrated at the run around I have been getting, 1stly if I was such a valid customer why did they not inform there customer about the move and the amalgamation. What a lie that you say your customer is important to you, 2ndly I find it very difficult to understand that no one picks up your phone, that in itself says volumes, you cannot be so busy that your faithful customers must call you 6 times. If you are short staffed and using COVID as your excuse then say so on your IVR, then your customers can understand, but that was not the case. I am using my hard earned money to call you only to get the run around and still no answers as to is the warranty still active and when can i bring my car for a serviced