Unacceptable, uncompassionate dealings with Vodacom

My husband had a contract with Vodacom. I have been through every possible avenue of trying to obtain information relating to his contract since he has passed away. I have been in store, made numerous phone calls and written to the legal department. The amount that has been stipulated in settling the remainder of the contract time is obscene and doesn't even make any sense. I am desperate for someone in a managerial position to finally assist me in resolving this issue.