How to reach T-Force ?

I need help with new account. I was a sprint client that signed up for t-mobile. 

Issues. 

* At time of signing contract for being sprint customer I was offered free phones (free) with 24 month contract. The phones applied to each person on existing account transferred to new t-mobile account.  After the first billing the phones are now being charged. I went to t-mobile store (corporate) and discussed this and they stated the store I signed up at was with and independent contractor and couldn't help us. I went back to the original store and was told the assistant manager that helped us no longer works there and would need proof of the promotion.  This is on file with the original contract. We asked for a manager and was told one is not available and told us that we can call corporate to resolve (which we did and couldn't help) or leave our contact information and assured me a return phone call the next business day. That was a week ago. The store phone number goes directly to a voice-mail stating the voice-mail box is full. 

* second issue. I ordered the t-mobile internet to escape from Comcast.  However, based upon my location the wifi signal is to weak to support.  So, I contacted support and they sent me a return label. I sent the server back with the label by ups. I confirmed the package was received in Texas with the tracking number. I keep receiving notification that I must return the server or I will be charged.  We confirmed with another local corporate store we returned it and still receiving text messages to have it returned. 

* Third issue. When I got the new contract with t-mobile I was denied the employer discount. I started a new job and found out two weeks afterwards that one was available. I was told that I would need to cancel the current plan and have it applied towards the new one but that I would be charged the full cost of two phones for canceling promotion  that I signed for. 

I'm in desperate need to speak with someone that can actually help. I was a sprint customer for over 12yrs and not one had any of these problems with phone, service,  billing or discounts.