Bad service delivery from the call center

I am struggling with telkom to provide me with proof of purchase for my cellphone, which i need to submit to the insurance. the whole day their call center has been transferring me from one department to the other. I spoke to Portia who was speaking to me like she is annoyed, spoke to Siyabonga who also cant help me spoke to another Portia who tried to help but we got cutoff while trying to help. im frustrated i dont even know what to do now