WHAT CHANGED SINCE THE MERGER BESIDES NOT BEING ABLE TO USE OUR PHONES WE PAY FOR

Since NO ONE has answered this question asked , 

I was a Sprint customer and switched to T-Mobile since the merger.  I have been having problems ever since I switched.  With Sprint, I had great reception.  Now, with T-mobile, calls drop all the time, texts don’t always send right away, and data is very slow, if it even connects.  I don’t even get call in my house.  This is ridiculous.  Why aren’t they using the same Sprint towers?  I have to leave my house to get text messages. Help!!!!! I went to T-mobile once again to be told oh  you need to do this or do that  and turn your phone off and on  so it picks up the closest tower. Jan 27th  we had an emergency in the family  couldn’t make a call couldn’t get a call and I was sitting in my house.  This has been a constant problem one employee did tell us verizon refuses to allow t-mobile access to their towers which they did allow sprint access  How can you purchase a company lie to customers and not be able to give the service that is normally expected. Just BS excuses from team members blowing smoke  up  you %$$