Telkom Refund

I bought a Telkom LTE router only to find out that we don't have signal in Standerton and that after the sales person told me that signal is available and i won't have problems when the router was installed it failed to connect to the Telkom server and when i contacted the call centre i was informed that Telkom does not have coverage in our area, because it was still in the cooling period i was allowed to cancel the contract and the router was collected by RAM and returned, Telkom however went ahead and deducted the monthly subscription plus extra to the amount of R 368.00 the subscription was supposed to be R199.00 since then i am struggling to be refunded the deducted the same amount for two months before it was stopped.