Dissatisfied with Insurance Claim Results!

I have 4 existing contracts with Vodacom for 8 years.<br> In Jan 2015, my IPhone 5 broke,Vodacom Alberton repairs store advised that the phone cannot be repaired nor replaced as we don't have insurance on this contract. After much investigation, they had agreed to replace my phone on my other contract as they had realised that someone messed up somewhere. I was also told that my insurance had not been upgraded on my other contract as it still covers R5000 for my blackberry even though I upgraded to the S4. I requested for this to be changed but to date still not done. In Aug 2015, my Samsung S4 had been ******, I called the call centre to block it and submitted a claim. I emailed them 4 days later and did not get reply. I eventually rushed home to use my other phone to call them for an update and told that it was declined. Reason -the simcard was removed from existing phone and put in another phone. this was done as my charger broke a week before and I needed a phone but both phones had been ******. I now sit for 1 month without a phone but still pay monthly for a something which isn't in use. I DONT HAVE DOCS FOR T&C ON INSURANCE EITHER!! NEED I NOW CHANGE SERVICE PROVIDERS??