Internet residencial

This is it for me with T-Mobile internet, I spent the last 4 hours trying to get the new device so i can hook external antenna because of my home surrounded with trees. All the stores either they don't have them or can't do the swap because I am an existing customer. Same for the customer service, and I've been a customer with T-Mobile for 15 years. I end up cancelling the services and stating new services with Verizon my neighbors have the services and they were happy with the signal and speed top 500mp