Little Xmas help for my 3 boys (any help as little or as much pls)

Please read 
Every little helps is greatly appreciated 
Jd  sports before customer service is a joke wouldn’t talk to me until my hubby had emailed which was twice and last night they spoke to me and tonight again needed another email (he works away)
Could honestly cry right now ordered £600 jd stuff for Xmas online yea loads (sounds mental) but We have 3 boys 
Last night 3 parcels cafe for the youngest and another 9 missing so when I called she said there’s probably one going to come this evening drivers probably just seen the one 
Nothing more came last night and when he left I went to tracking and he signed my parcel some weird squiggle 
Called them back just now and says it’s all delivered 
Now we have to open a dispute now which will take 28 days which he said likely I’ll be lucky if Xmas with delays ect 
Like I said could honestly cry the 2 oldest need Their stuff the age they are it’s expensive clothes trainers ect 
Wee one can easy get cheap stuff but older kids don’t have a clue ??

*edit**
It has been signed by someone else not my name 
Signed by a squiggle the paper is Hermes 
But tracking dhl 
Cannot get through to dhl at all

I need a £600 miracle by 2 weeks ????