We were in an apartment in Canada for two years. Unfortunately, due to my visa status, I had to leave the apartment in a very short notice (1 month). The landlord agreed to use my caution deposit to clean the apartment and give me the remaining. Hence, after leaving Canada I requested him to give the bill and the remaining amount. This is when I received a threatening mail from his partner, that they were disgusted by the state of our apartment. He is threatening to sue us... He claims that we have destroyed the apartment... but the only problem we are aware of is that we left some of clothes in the apartment (our intention was to donate them and was hoping to request our landlord to do it on our behalf), as we couldn't trash them in the last minute (the garbage bins they gave was full and it is not possible for us to put them in a public bin). Other than that the only issue we were aware of is that handle in the refrigerator with a worn out thread. It was a recurring issue, which was "fixed" once by the landlord.
Honestly, if have had a few more days, we would have tried to leave the apartment in a better state. Cleaning was especially difficult with a crawler on tow and the landlords visiting our place as often as possible to show it to other potential clients.
Now we have left Canada and he is threatening us. Has anyone been in such a position? Could anyone advise me?