Unprofessional service

I upgraded my contract with 8ta in the middle of October. I was not advised that I will be billed a pro rata for the upgrade due to it being in the middle of the month. I received an invoice totalling R 1,091.65 whereas I agreed to a monthly fee of R319. I called Telkom and they advised that I should contact the company that did my upgrade (Sell Direct ). I received an sms stating that my data was almost depleted. According to what I was informed I had taken out a Smart Plan 100 which included unlimited data, Zanele advised that there is no unlimited data on my contract whereas Lungile advised that I used up my \unlimited"data which is capped. Furthermore"