I don't have the phone number but I'm in the same situation. I'm in Ottawa. Wanted to get some rims and TPMS sensors for winter. Called both Montreal and Lawrence parts departments and nothing but the sound of crickets from them
Very poor response in my opinion. In desperation, I called the Mississauga parts department and what a difference! The parts person there (Chris) was very helpful and confirmed pricing and availability for what I wanted. When I mentioned I was in Ottawa, he said there was a new service center opening up there soon and that would be the best place to order the items from so I wouldn't incur shipping from Toronto. He checked the Tesla internal system and wasn't able to get a phone number for Ottawa, but he took my name/number and said he'd call me once he had it. I'll keep you posted, and vice versa if you get the number I'd appreciate you posting it.