You are wrong, till is perfectly fine – and so is til. See Merriam-Websters article about this, at https://www.merriam-webster.com/grammar/should-you-use-until-or-till-or-til
This week I don't. Next week you may be right.
You are wrong, till is perfectly fine – and so is til. See Merriam-Websters article about this, at https://www.merriam-webster.com/grammar/should-you-use-until-or-till-or-til