Unable to get hold of Vodacom

Vodacom is so frustrating. I have a contract with Vodacom and I am battling to get hold of Vodacom. I have a contract with Vodacom and my contract has come to an end in June. I am not able to call them. When I go to one of the Vodacom shops, I am told that its a franchise and I cannot cancel the contract there. I don't know what to do anymore because I am now paying for the contract that I don't need just because I cannot make a phone call from my landline and I when I phone them from another person's phone, I am not able to speak to a customer care because they only have the stupid options for self service. This is so unprofessional and ***********. My contact number is ***.