Have you ever been to Colombia/Peru when you did not receive your luggage?
When I went to Cali, I did not receive my luggage and had to wait for 36 hours (which means I had to buy underwear, toilettries in Cali
). The French guy who arrived the day before me, also did not receive his luggage.
London - Miami (change plane) - Cali
On the way back, I almost not receiving my luggage back. I saw my own luggage in the 'claim your luggage' transit! I wasn't happy because it was supposed to be transferred to another plane!
When you go to Colombia/Peru again especially if you change your plane, make sure your luggage has been transferred.