I want to know my employment rights (as per labour laws) in Saudi Arabia

Hi, I am an expat working as Auditor in an Audit Firm in Riyadh. I arrived for the first time in the Kingdom on my employer's visa on March 10, 2024 (this year) and my employment contract is till September 9, 2024 (6 months). However, as per one month notice period defined in employment contract (same mentioned on Qiwa platform), I notified my employer through email on July 31, 2024 that I will not renew my contract with them after September 9, 2024 and have notified the same through Qiwa platform since I plan to move to another employer and have requested my current employer to transfer my Iqama to the next employer in Riyadh. Now, my employer is saying that they will not accept my resignation. I have already resigned on Qiwa and have served my notice period as well. Since I have been in the Kingdom for 6 months only, I am not well aware of the legal implications. Please help me and let me know where do I stand in this situation.