its alrite mate, he sounds desperate for the money the person who he owes money to is obviously harder than him so just let him deal with him.

and about not leaving your mum to answer the door why dont you just tell her not to answer it or tell her to tell him that your not in. (would he actually try and break inyo your house or something)

if you someones in debt i dont think its right going round there house unless its a big debt and theyre just trying to avoid you on purpose but its not you aint got a job yet so its not your fault.

Its his problem not yours let him deal with it and dont let him take it out on you.