Unauthorized deduction

Tracker, what can I say. Changed my policy on 26th January and was told there is a fee of R350 due for cancelation when all I did was go from an expensive one to the R99 month one and my understanding was it would be subtracted with my new premium at end of January. 3 February I received an email advising me I owe them R350, so I called and was informed I had to make payment. All calls are recorded according to them, and asked if it could be deducted at the end of February to which I was informed a One Time Debit Order was to be sent and I was to authorize this which was duly done. 2 March another email was sent and again I contacted Car Track informing them that the money had been deducted from my bank on 28th February. An email was sent with all relevant proof thereof. I have been corresponding with Car Track since then on the 8th, 11th, 20th 22nd 23rd March with no resolution nor feedback with regards to this matter being resolved. 24/25th March Car Track deducted R350 from my bank without my knowledge or consent after being informed on numerous occasions I will not authorize deduction of this amount, which duly amounts to breech of contract from Car Track and theft. I will cancel my contract with Car Track with immediate effect at jo additional costs due to the unauthorized deduction, non commitment to resolving said issue and breech of contract on their part.