You are lucky if you even get your fees back. I sent a package last Wednesday 1st October from MAD to FRA with DHL, which contained tender documents. The tender ran out on Monday 6th 9 am.
I paid € 38 for "guaranteed next day delivery". The docs arrived - Monday the 6th at 2pm. Damage has clearly occurred.
The reason for the delay according to DHL was a missed connection, and bank holiday on Friday 3rd in Germany.
Request for a refund was refused as "guaranteed next day delivery" according to the DHL represenative in Madrid means "best effort basis". The missed connection was outside any one´s control, so tough luck!