Cell C is an impossible company to deal with in response to a problem I have with my fibre query.

I was reluctant to go with Cell C when fibre was made available in our area, but they had a "good deal" and my neighbour said he was giving it a go, so I decided to try them as well. The offer was if ordered by September you would get free fibre line installation, free router. A technician would come and set up the router and check that the wifi was operating properly and 3 month free subscription before starting to pay the normal monthly charge. I was also required to pay upfront one months subscription which will kick in once the three free months came to an end. I ordered my fibre with Cell C and the fibre line was installed on the 22nd September 2017 by Vuma very efficiently, next the router was delivered on the 26th Sept 2017 and then nothing. I contacted CellC and asked what happens next, they "escalated " the query. No one responded and on the 8th October 2017 I wrote a email to support and complained that no one had been to install router and I hadn't a clue what to do. A technician arrived on the 9th October 2017 and it was installed. The situation that I am trying to sort out with Myfibre is that they want to say that my 3 free months kicked in from 22 Sept2017 amd ended on 22 Dec and I don't agree. I only cancelled my ADSL after I came on line with the fibre on the 9 October2017. They charged me pro rata for the last week in Dec which I queried and get a ****y response on email. I have given them my telephone number but they can't be bothered to call me or sort it out. I will never ever recommend Cell C to anyone who treats their clients like this....and unfortunately for them more and more people who feel exactly the same, and what an adverti*****t that is. As far as I am concerned my free offer should only kick in from the 9th Occtober 2017 and end on the 9th Jan 2018 , I need a refund of the payment deducted for Dec and what happens to the months subscription I have already made?...My fibre just can't be bothered to reply to these queries.