Worst Service Ever

I am irrate I joined supersonic last year where it took 3 months for me to receive the router it's been a back and fourth where they told me they can't see my payment and advise that I cancelled the order up until it was eventually delivers I had a debit order with them where one day I checkedy statement in Jan I saw a balance of 2000+ I then called to find out I was told that I cancelled and I need to pay for the router.they then promised to fix the error and told me I should continue making payments and cancel the debit order because it will take the error ammount which ended up being 3000+ the agent I spoke to in February didn't fix the error so I changed my payment date to the 1st and continued making payments in Feb I was double charged and made a payment of 468 which was for Jan and february.and another payment was made in march and currently my SIM is suspended because they say they can't allocate my payment for March but I sent the POP everytime I ask about theCAS-***-L4F0W2 number I get told finance has still not given feedback it been 2 weeks now since cannot be sorted I want to cancel my services and I please need my refund for August that I made and you can have you router back because! Because I cases more that 10 where I have been reporting this matter I sent all the pop but the excuse now is finance. Everyday I follow up and I get told finance will attend this is an inconvenience and I wouldn't really recommend supersonic yes MTN is a good network but supersonic is the worst.