Tmobile price increase

A question about : Tmobile price increase

I have this morning, received notification of a price increase on my Tmobile monthly plan - which amounts to 3.1% - to come into effect from 9 May - ie 5 weeks notice
Surely - they cannot just increase prices as they see fit on existing contracts and with only a months notice too ?

Best answers:

• >> Mobile Price Increase: Just screwing with us?
  The fact is that they can just increase prices.
• I also had this letter but mine says 3.3% increase - the thieving b*stards!! To top this off they are saying that my contract is actually discounted but the increase is based on the 'original' tariff price - There has to be something that the public can do to stop these companies just increasing prices during a contract - after all the customer can't just decide to decrease their payments when in contract!! Come on Martin Lewis work your magic with this issue!
• (monthly charge)*(number of remaining months)
• I am now on PAYG with Ovivo and I don't care. People more competent than I am recon that you are stuffed.
• I know its says they can increase by RPI every 12 months but if we have to prove material detriment to cancel the contract, should they not have to prove that their costs have increased by the RPI to justify the increase?
• Is there anything to stop us from changing our contracts for cheaper options ?
  ie If someone was paying Ј20 per month - reducing it to a Ј15 per month contract ?
• The T&C?
  Unless they say that you can downgrade at some point, this is at T-mobile's discretion whether to allow you downgrading or not.
• The contract is not the issue - there is no monetary value stated on any contract. Changing from one tariff to another should be easy UNLESS they have a term that explicitly prevents this.
  T mobile do, but others will allow an increase (but not decrease) in a chosen tariff. This isn't as unfair as you might think, as punters used to go for the most expensive tariff to obtain a free phone, then drop down to a minimum level and still kept the phone. This disadvantaged those to knew their limits and paid whatever the phone cost was on the lower tariff.
  To save the hassle, some networks said no downward changes in the minimum term, or restricted you to reduce by one level every 3-6 months.