I don't know how the Telegram wallet works and i don't care to know because it is not an option for me to store any coins. Telegram is one platform with so much cases of scam and fraud, and that alone is enough reason not to use it to keep any of your money. Even if you want to store shitcoins, there are better wallets to use, wallets that are non-custodial and open source like Unstoppable wallet, then there are others like trust wallet that are not open source, but a better option for shitcoins than telegram wallet.
Telegram! this name itself to me anytime I hear it, I don't get rest of mind because of a lot of shits that i have undergone. Telegram itself is full of scammers, i am a victim. Although, I don't have much knowledge about it but the little transaction i did with them, some of these transactions, i fell into the hands of scammers. since then, anything that would let me associate with them especially their wallets, I have to think and rethink again and again Up to hundred times. for me to be sure if it is guaranteed.
That sucks, I know that Telegram is trying to innovate and having some wallets on it is part of their plan. But knowing that they've been swarmed by scammers, and the customer service that they have is quite hard to reach. It's best to just use them as is being a messaging app. We've seen casinos building their platform on its own platform and it's not really appealling at all. Now, with vast projects that have been using them as a medium of communication to their users, I think this is the first time that I've seen someone who used them as a wallet and then the user's number got blocked by itself. Keep on appealling and contacting Telegram because if they're the one who blocked him, they are the only one who can unblock him as well.
I think the best way to use it is just for communication and passing of messages and information. but anything related to savings of coins, I am not there. It has happened to me before and will not be making sense if it should repeat itself again. Especially when you said that their customer care service provider is very difficult to reach. If God forbid one fall victim of any duping related issue, and urgently in need of their customer service assistance, what would you do? When already they are known to be so difficult to reach? You see! that's a very big problem. So I think the very way to operate with them is just to communicate and passing information. And even if you must do transaction, you have to be extra -extra careful.