I would definitely not consider providing my personal information such as my credit/debit card information to a bot no matter how much they promise that it's totally safe. Also, why in the first place one would use a bot on a messaging service provider to buy or sell cryptocurrencies when they can easily use that themselves using an exchange?

Even if one doesn't like the centralized exchange structures or doing KYC, it is still better than providing personal information to a bot created by a third-party developer to purchase cryptocurrencies through it.