Need Judgement!

Dear Learned members, i need judgement for the following circumstances. My friend has given his laptop to the company for battery problem(it was under warranty). The company delayed the delivery almost 3months.My friend filed a case in consumer forum and in reply the company said that the laptop was lost by the courier company so it is not liable for the compansation as it was due to the act of third party. The computer company did not informed us about this before but after the institution of the case. So i need judgements for the following circumstance. Regards Md Shadab Ansari