Telkom poor service

Last year December I signed up for 160 GB (80GB day 80 GB Night) on contract for 24 months. So in December I received my package as agree. come January and February they now give me 80 GB (40 GB day and 40GB) without letting me know what’s going on. So today I call telkom, they say they can’t help me because I got the deal from from a 3rd party, When I enquired about the sale they responded as telkom and not third party. Now, Nobody is willing to help me at Telkom because of this 3rd party ****. But the debit order says telkom. I have 3 different Telkom contracts and I get one debit for all of them but now that they have to help me they say I must speak with the 3rd party. They don’t even know who is this damn 3rd party they can’t even give me their number. I can’t even cancel this contract. What a horrible service and experience from Telkom. I’m so ****ed