CELL C HAS ZERO CUSTOMER SERVICE - WORST NETWORK EVER

i made a claim from cell c insurance 3 weeks ago, went in store and submitted all the documents needed. I was then told i need to call the insurance department to proceed with the claim. upon trying to call over 10 times , i was advised by customer service that the insurance department does not accept calls from non cell c phone numbers. Because i had already blocked my cell c number when it was ****** , how am i supposed to contact them? i dont know anyone else who uses cell c and i can now see why. The customer service wouldn't even offer any assistance but transfer me to the c surance department ( which always drop as soon as i'm transferred ) ALL I WANT IS FOR THE CELL C SURANCE DEPARTMENT TO CALL ME SO THAT I CAN MAKE A CLAIM, IS THAT SO HARD ?