Cellc Mall of the North unfair business practice

I took a WI-FI contract with CellC at Mall of the North Polokwane however at some point the rooter was not working. I took it to the store where it was taken for technical repairs. Lateron i was told that such rooters were faulty, then the Assistant Manager told me that i need to top up R1500.00 so i can get a new rooter. it did not make sense to me because of the price of their rooter because in the first instance i was told that the price of the contract i took is inclusive of the rooter. I did not top up (that means me not having a rooter until i bought a pocket rooter and inserted their SIM card) but CellC continued to debit the very same amount of R525.00 for the contract hence i was no longer using their rooter. after seven months i decided to cancel the said contract and that was when i was told that i am owing money for the instrument (the instrument that they took in and never returned to me). Upon seeking further clarity i made a complaint and was told that as soon as the store finishes with the investigation i will be given my money that i wrongfully paid for all the months. To this date Cellc Mall of the North is not giving me my money and i am not happy with such kind of unfair and dishonest dealing from them. i tried calling the Store Manager who ducks and dives and not coming to my assistance. and if i don't call him i hear nothing from him hence he keeps on promising to help. I NEED MY MONEY BACK. I AM TOO POOR TO GIVE CELLC MY MONEY.