Yes. However, if you reach the Data Cap limit, your chargeable data roaming usage will be barred and you can’t use the data service unless you purchase an add-on or unblock your data cap.
Great question! Although I don’t know if there is a specific function for this on your particular phone, the best way to save the message is the simplest. Turn up the sound as high as you can and record it onto a digital recorder (like you would use for a lecture), a cassette recorder or your cell phone if you have a voice recorder on it. Then save it as an MP3 on to your computer for safe keeping. You can also Google your vtech model number to see if you can find an owner’s manual. They might have a way to save a recording in there. Probably not, but it’s worth a shot.

Set up call forwarding To start forwarding your calls, click your profile picture at the top of Teams, then select Settings > Calls. Under Call answering rules, choose Forward my calls, and then select where you want your forwarded calls to go: voicemail, another person, or a call group.
Hello, you have reached the firm of real estate agent X. I am currently in a meeting with a client, but I will get back to you as soon as possible. Kindly leave your name, your reason for calling and your contact number so that I can get back to you at the earliest. If there is any kind of urgency, you can get in touch with me at Y number.