Service? What service?

I had a cellphone contract that was in arrears. Once I could finally pay, I tried to contact the legal team which is where their call center said the account was being handled. I could not get a hold of anyone for months, even when I went into the store or was transferred by customer care. I then requested requested that they debit my account thinking this would be easier. But nope, the instruction wasnt processed. Long story short, I got hold of someone, got the details and made payment a few days later. I specifically asked if I will get my number back and was told I would. Account is finally settled but without an explanation the number no longer exists... I have called again, emailed, and sent DM's. None of them helpful or care to pick up the phone and call.