poor service

after Telkom mobile has switched its roaming partner from MTN to Vodacom I am experiencing network problems, DATA gets depleted quickly and other services such as playing music on google have stopped but data is allocated to my Telkom account monthly but its off no use to me. I get all networks DATA which now has to share all the VAS which comes with the contract. I have called the contact center with no help all advices given do not work. I wish someone could come up with a solution as I cannot afford to pay for services I cannot use but being billed for them.