Billed for a contract I did not agree to

I am very disappointed with the service offered by Telkom.

I had taken a contract with Telkom 2 years ago and now my contract has expired.

I was not made aware that my contract is now being billed on a month to month contract and I am not receiving the original package that i had signed up for.

My husband had also taken a contract for the exact same time and package that i had taken 2 years ago. He is also billed on a month to month contract but it includes the same package benefits.

I find that this is not professional neither is it in keeping with the contract deal with both clients. How can i also be billed on a mlnth to month basis for a package i did not agree to?