Tripmonster complaint: Flight Canceled, No Refund, No Communication

I booked a flight with Tripmonster on Juneyao Airlines for July 2, 2022 (HO 1853) from Wuxi to Sanya and return on July 20, 2022 (HO 1854). My booking reference is 21196936. We took the first flight HO 1853, but the return flight HO 1854 was cancelled by Juneyao Airlines. After receiving a very vague email from Tripmonster on July 6, 2022; I contacted Juneyao and they told me that the return flight was cancelled, and that I had to get the refund from Tripmonster. I completed the request form with Tripmonster on July 7, 2022; and Tripmonster sent a ation email on the same day saying that they would get back to me in a few days with my options. It is now July 13, 2022; and I have still not received any follow up email from Tripmonster. Of course, I have had to book an alternative return flight for me, my wife, and my 2 kids; as we obviously need to get back home to Wuxi, and we have heard nothing from Tripmonster for 6 days. Furthermore, as has been mentioned in numerous other complaints about Tripmonster, there is no customer service phone number to call or live chat service. Therefore, as a paying customer, I am forced to wait for Tripmonster to send me an email.