Unauthorised debit order

I joined discovery wef 1 July 2022. I made it clear on my application form that my employer would be paying my premiums. Page 5 and 6 of the application form had to be completed by my employer to confirm that I am an employee and that they would deduct the premiums and pay them over to Discovery.. Clause 7.1.2 of the application form states that "Discovery Health Medical Scheme may bill us for the amount due for this member in the same way as it does for our the other employees Health Medical Scheme". As a result, my employer went ahead and loaded my medical aid details on Persal so they can deduct your premium when I get paid on 15 July, like they have done with my previous medical aids where billing and premiums were paid in arears. Lo and behold I wake up this morning and you have debited my cheque account for an amount of ~R3 800 despite the fact that there is a stop order in place with my employer scheduled for later this month. I am now sitting with a problem that my other debit orders could not be honoured because of the unathorised debit order on your part. Can you kindly listen to the recording from when I was contacted by one of your consultants to finalise my application. I specifically informed her that the premiums were going to be paid by my employer through a stop order. When she asked for my banking details which I was hesitant to provide because of what has now transpired, I specifically requested that Discovery should not debit my cheque account and she assured me that my banking details were required for her to finalise the application and that they will only be used for refunds in the event that I have to be reimbursed for claims. As already stated above, the stop order has been loaded by my employer as per the information submitted on my application form, Can you please please reimburse the amount that you have deducted and cancel the debit order on your side as this is not what I signed up for. Thanks