Temp upgrade

[Jess11]

I’ve moved into temporary rental accommodation for a few weeks between house moves. The broadband is really slow and I rely heavily on good speeds for my job. My idea was to tether my laptop my phone using hotspot but I only have 1Gb data. How do I upgrade effective immediately but only temporarily? I tried adding the unlimited bolt on but it says effective 1st March... I’ll have moved out by then. Any ideas?

[MI5 · Accepted solution]

@Jess11 

You'll need to call customer service to bring it forward.
Numbers here Guide: Coronavirus Community Help and Support 
When it comes to the reason you are calling stay silent for 15 seconds and you will be taken to the keypad options.
Press 2 for Everything Else
Press 5 for More Options
Press 7 for Anything Else which will put you though to someone.
Say "Upgrade", "Lost/Stolen" or "Fraud" if you have to, to get put through to someone.
8.00am is the best time to call if you can.