VODACOM CLIENT HAVE NO SIGNAL BUT STILL HAVE TO PAY FOR CONTRACT

VODACOM CLIENT HAVE NO SIGNAL BUT STILL HAVE TO PAY FOR CONTRACT How come I have a Vodacom contract when there is virtually no signal for 2 days. Yesterday one of my calls was cut off due to the fact that my cell phone has no signal. The person tried to call me back twice, after which they considered it unsuccessful. How do you do business that way? Today a client failed to reach me. I am required to also have an MTN cell phone as well as purchase MTN airtime at all times. Will Vodacom refund me for the MTN airtime and data purchases? Because I see no discount on my bill for the fact that there is no signal and therefor no service. Monthly Vodacom bills still need to be paid in full. Very poor service.