Terrible service provider

Terrible service provider. What's the point of paying a contract which cost more than R1500.00 monthly for unlimited calls and sms and 10gig data but calls never go through I have to redial at least 5 times to get the phone to ring, half my day consists of not having data due to no signal??? But when the bill comes at the end of the month they want their money right away? Two more months left with this EXCUSE of a contract ....GOOODBYE CELLC ..... HELLO VODACOM.