T-Mobile non return fee on gareway scam

Ditto here:( Returned their ARC KVD21 GATEWAY BLK KIT with IMEI 864644068627637(per the Return Order # 71017885081, Return Order Date 11/21/2022 with tracking # 1Z9E86E79038349967). I packaged the thing using their packaging box with the return label attached. Dropped it off at the UPS Staples on 11/28/2022. Package proof of Delivery below:

Now, after two calls with their customer service from their NY(before xmas 2022) and NJ T-Mobile office (two weeks ago), they still charged my account for this device for $234.00! :(  There is clearly an anomaly here and T-Mobile management is well advised to look into this pattern of "missing" devices and make this right with their customers. This gateways are like phones. Carriers will know if they have been active when and where. Now, why should any right-minded person not return this device and not able to use? It does not make sense at all! Ergo, T-Mobile has work to do to make their operations efficient and account for all these "missing" devices. These unwelcome "non-return" charges are unnecessary stress to us affected customers! And this must STOP!

ATTENTION: T-Mobile investors. Take note of this anomalous practices. This will affect your shares somehow in the not so distant future if not corrected in time.