Apple Arcade and Apple TV+ :Trouble in Cancellation of free trial

I got the free subscription for Apple Arcade and Apple TV+ for 3 months when i bought my iphone 13 pro and its due for renewal by 20th July 2022. I have been trying to cancel free trial for last 2 weeks, however am getting a message "Your request could not be completed please try again later". This is repeatedly appearing every time i click on the cancel free trial option. Tried many means in doing the same however could not succeed. Can some one help me in this?