Cancellation Penalty just so i can move house??

Pathetic, *******, dusgusting service provider EVER... to Start off when i app**** for my month to month contract (which it memory serves me right i never signed for) i was told that i would only have to pay the R699 Monthly fee end of the 1st month. but then i fought for 3 days with them regarding the pro rata amount that i was never informed about. but NOW i will he moving to a new residence so i called Vox to ask what i need to do to change my address and move ONLY my router to the new address which ALREADY is fibre ready and installed. i get told that i have to cancel my current subscription and pay a cancellation penalty of R2300 and once ive moved i must re-apply for a new subscription. so then i would again have to pay R699 and pro rata amount in advance. why the HELL do i have to cancel and then re apply. yes i know the infrastructure cant be moved. but all it takes is for you ppl to set my router for the fibre line at the new address. having to cancel and re-apply is just Vox way of getting our money. vox tells me that the penalty is cause they pay the installation.so they saying they payed R2300 for my installation when on my 1st statement it shows Vuma setup charge R876,53 and on Vuma website is states they charge R1700 installation. so it seems vox sucks these amounts out thier thumbs. according to me a month to month contract means that it can be cancelled at anytime without penalties or having to give notice. how can it be called a month to month if you have to use it minimum for 1 year. Vox needs to learn the phrase month to month. maybe Rain.co.za can show them as they do the same but they dont ask stupid things. i want know why the hell should i have to cancel my subscirption and re-apply just to move my router to a new address that is already fibre ready????? and dont dare use the excuse of "terms & conditions" as the T&Cs thwt Vox has works out practically 100% in thier favour garenteeing them to get more money out a person no matter what the problem. so i need to why?