Unable to issue invoice/statement timeously

I pay DSTV subs annually. Began phoning for an invoice mid October. After 3 conversations with 3 ladies who tried to be helpful, they were unable to issue an invoice /statement because their system is upgrading. On 12.11.15 a lady phoned me to advise me that unless I paid my account, my service would be suspended. She advise me the amount due and I waited for an invoice to confirm the amount due. Didn't happen! I paid the amount due of R8546.00. Imagine my surprise when today, I got an SMS advising me that my account is suspended due to non-payment! I phoned again and spoke to a gentlemen who tried to help me. He told me he is unable to access an invoice or statement, because the system in getting upgraded! However, he did confirm that my account has been credited with my payment. He then put me on to Mr. Iyanda Mfazwe who said he didn't know who sent the SMS and said he hoped by service would be working by the time I got home. I sincerely hope so too! Still no invoice or statement