Unhappy Vodacom Client

Hi, I am verry upset they offer every client after their contract expires an upgrade option. As i was on line to look at the deals they have just to find out that i am.due for a upgrade and they just refuse to help in a upgrade that i was interested in. As a loyal and well payer never in arrears or late payments They just refuse helping people. What is the use for being at a service provider that doesn't even provide after service quick to debit the account but with upgrades just refuse to assist in what we actually wanted.