Telkom package invoice?

Please help me understand. I have been a customer for many over 10 years with my landline installation. In November, I decided to buy in the internet package that includes landline and data for R999 per month. I previously was with Mweb. The telkom agent in Claremont Cape Town explained the prorata and said that the bill will now one bill as my landline is now part of the package as I understood. Only on 6 December we got the internet connection after many follow up calls. I waited for the bill but I only received my landline bill. I called the account department and I was told that I have to pay the landline separately in December then at the end of January, I will received the combine bills that will include December and January. I argue that the bill can't be a package bill for 2 months as I have received a separate December bill for the landline and that must be rectify. After many calls, I am still told that I have to pay the landline bill regardless. This means, I am paying extra then on my landline instead of it being included in the package. Can I get this issue resolve by a senior manager? I understand that on the customer care line and biking no one was able to assist or give me an understandable explanation. Why pay the December landline separately then get another December and January invoice that includes data and landline??? Please help. My landline is ********** . Patricia