Writing a Telegram bot is easy yes but writing a good one isn't. There are some very tricky things involved which you basically can not know and wont find in the Documentation. It forces you to run into problems first and then look for solutions. Especially if your bot gets decent amount of traffic something in the range of 1msg/s and above.

The people at https://t.me/BotDevelopment (unofficial) are your best chance for support because Telegram (bot) support is a joke.