***AVOID AT ALL COSTS. PLANES NOT FIT FOR PURPOSE***Delta cancelled our flight due to poor mechanical upkeep of their aircraft. This highlights their maintenance schedule is not fit for purpose. Furthermore we were told to book, hotels, taxis, food etc at 0300, whilst we waited 24 hours for the next flight. Upon submission of claim, delta denied all knowledge of reimbursement. Unbelievably shocking customer service and would never use again