Bad customer service

Hi I hope this message will be my last message to request Rain SA to call me, I've been trying to activate my SIM card since yesterday, I've sent 4 /5 emails and called 4/5 times but I cannot able to go through, I've been holding for more than 10 mins each call I make, I'm hopeless I feel like canceling this contract already as I fear that whenever I have problems with the sim card I won't get assistance, kindly call me on ***