Mr Price Mobile - 8 month query!

I have an unresolved query with Mr Price Mobile since June 2019. The Simply More 5GB Top Up package was sold to me with the knowledge that I will remain with Vodacom as provider. When I received the Mr Price Mobile simcard the provider was Cell C. This was unacceptable to me because of the poor reception we have in the town I stay. Numerous unanswered requests to talk to a manager and even a returned registered letter to them contributes to my frustration. Never have I received such poor customer service.