I cancelled my internet service

I went into more than 1 t-mobile location n tried to cancel my t-mobile internet service with equipment in hand. Two said had to be done over phone eventho I'm hard of hearing. 3rd finally said they'd do it n took equipment. My husband was with that time. I had already moved n hadn't used service in over 2 months. I keep being drafted for it. I ONLY had internet thru t-mobile. I was also told they can credit since able to verify no use n since I'd been attempting cancelation over the months. I've since been charged again. This is ridiculous n money stealing. I did online chat also n STILL no refund n STILL got charged. Service address was 1201 sw heritage dr el reno ok 73036 the number they issued despite being just internet service was 405-965-5887 saying they had to do that for some reason. My name is Lucinda Pashby. I can't log into my account since guy at 3rd location cancelled it. I have only wanted to login to confirm cancelation since no other confirmation received. I assumed since it says I have no account n had to create one here to inquire, that it had finally been cancelled as told to me n my husband. Then my bank account got drafted again. Equipment was returned in perfect working condition. The guy in choctaw, ok t-mobile tested it upon canceling service n told other guy it was good to go passing it off. I even had it in original box with chord. Someone at T-mobile should be able to get this taken care of n give me my 3 months refund. It shouldn't take all these efforts to get it done n if this can't get resolution, next steps are filing claim with better business bureau, reaching out to federal disability since attempts were met with "must call" despite my telling them I cannot hear on phone n have hearing disability, n sharing my experience on social platforms.