Poor service

I have been a customer with Vodacom for 5 years. I have recently upgraded my 3g account. Unfortunately I inserted a nano sim inside the device which got stuck so I went to the store to check what could be done. The person who assisted me, Hope, was efficient and provided me an excellent service previously, referred me to the manager Idris for assistance. The manager was unable to provide me any feedback nor clarity on way forward. Surely it was not the first time that such an incident had occurred. The manager was persistent that if he returns it will be rejected afterwhich I asked what should I do and was still provided with no clarity. I checked in my device for repair however I was provided with no guarantee whether the device will be fixed. It is the attitude of such staff that makes me consider accessing other service providers who would provide me with better service.