Don't answer. It's a telco trying to sell contact lenses

i called back and got answering machine saying thanks for calling clever contacts so i hung up. they called me back 4 hours later from same number as above but ending in 391.

Didn't answer, they didn't leave a message. Likely telemarketing spam.

Caller: Marketing company touting for Animals Asia

Expecting a call, the unknown number was answered. They introduced themselves and launched into a 2 min spiel about Animals Asia (and its good work) which is a cause I support, and then asked for additional donations.

Called my temporary sim I only use for spam. Didn't leave voice message. Could be spam.