No service from Vodacom

I reported slow fibre speed to Vodacom 14 Feb 2022. I received a service request nr S***. To date this issue still hasn't been resolved! I pay for a 20G line and is currently getting 1.5. No one seems to be able to give me answers as to when a technician will be coming out to sort this out. This is unacceptable! Their excuse remains Nokia needs to dispatch technicians, but I don't have a contract with Nokia, I have a contract with Vodacom! Take responsibility for your service I am paying for Vodacom!