log in problems

quick story

I lost my phone/stolen, walked inside tmobile the next day to buy a new phone, I picked a phone, it was out of stock so we had to order it, paid the initial payment,

gave my email address and billing info to t mobile. t mobile tells me to check email, open the link for e-signed agreement may take 24-48 hours before it's available to view. i waited, payment went through, got an email saying my device has shipped with the order number together with a link to check order status. i signed up for a tmobile ID, received an email saying tmobile id is ready for use. Went to tmobile website, clicked log in, entered my username and password,

NOW my problem is, after signing in to check my order status, it ask's me "Please enter the phone number you would like to link to your account. For verification purposes, we will send a free text message containing your confirmation code to this phone number." so I entered my old number that was stolen and ask me for "For verification purposes a 6-digit confirmation code was sent to (number)" my question is, how tf am I suppose to get that confirmation when i don't have a gddmn phone???seriously tmobile? i went to tmobile store for help but they told me to call customer service. with what tho? i currently live by  my self and have no extra phone to call cutomer service. it has an option to change number below, so i tried my family's tmobile number but it wouldn't work. can someone help a brother out! thanks