Old Mutual contravening Treating Customers Fairly legislation

I am shocked that old mutual disregards a serious complaint submitted for a resolve on 23 April 2025. The problem actually started in January 2025 and I could not get old mutual to fix the error they made on their side through the adviser. It then went to the complaints dept in April but twice since then they have apologised for the delay in completing their investigation. Simply put old mutual deducted 3 premiums for my policy in Oct 2024 but should have deducted 2 premiums. I reversed the unauthorised deduction and old mutual then stopped deducting premiums from my account without notifying me which went unnoticed as it was during Nov/Dec period. Apparently old mutual believes they did their part by sending me an email on 30 November to advise that they would not debit me due to me reversing the unauthorised debits, no sms & no calls and what if my email had changed or not working. I have 4 benefits on my policy but only 2 benefits lapsed which is unacceptable and 2 benefits remained which I'm currently still paying for. They refuse to put the 2 benefits back on the policy yet I did not instruct them to stop my premiums nor cancel any benefits. So how does a company get away with such bad practices and treat customers so badly. If there is no response to this complaint I will have no choice but to take to social media to make this issue a public one as it seems these big companies only respond urgently when their public relations is at stake.