ShortsWave Subscription Not Cancelled Properly And Still Being Charged

I cancelled my Shortswave subscription on 07/05, but despite this I have been charged multiple times afterwards. There is no option in the app to properly cancel the subscription and stop the payments, so I am being billed against my will. I have already emailed Shortswave support about this situation and explained that I cancelled and still keep getting charged, but I have not received any response so far. At the moment there are also two pending POS DEBIT charges of $17.99 each from Shortswave on my account. I request that my subscription be cancelled immediately and that all charges taken after my cancellation date of 07/05, including the two pending $17.99 transactions, be fully refunded to my original payment method, and that this cancellation be confirmed to me in writing.