Unauthorized debit orders

I am a Fusion client, sold to me by the agent at The Grove when i just wanted a normal account. It's the worst thing ever. This bank is just terrible. I have a loan, I have in writing from FNB my first payment due 31 May for x amount. On 13 May they deducted a small amount, I queried this immediately, no response or assistance, I followed up my email no response, I then phoned them myself, the agent advised me my debit order is loaded weekly. Said to her no, I have a monthly debit order, proof is on my debi check loaded, and proof in writing from them for the amount and fist payment due 31 May. She confirmed it's strange she only sees 1 deduction I insisted on a refund and that they fix their problems. I got a message on my app to state my debit order date is fixed. Just to check my app and see that suddenly my transaction history shows 5 deductions of small amounts throughout May, strange as these deductions didn't show previously and now suddenly it's there. Meaning my transaction history is being backdated? How is that possible?

I am not getting any assistance, no one is responding to emails. I will be closing this account it's only given me anxiety since I opened it. I will not recommend this bank to anyone. Simple Capitec Banking is so much easier.