Sim Card *****!

If I could select 0 star that would've been appropriate. Customer Service guy was very friendly to help but the sim card issue is getting old. I've 4 sim swaps in 1 year. After each and every software update my Cell C sim card dies. The device is perfectly fine as I'm using a Telkom sim card as a secondary. Each time you do a sim swap in store it costs R150 or via customer care telephone it's R50 billed to my account. This is pathetic really!