Why is "Current Balance" erratic?

[Anonymous]

Does anyone know why the "Current Balance" figure (as displayed on "MyO2" and on my phone) seems to fluctuate without apparent reason?

For example, starting with a balance of £3.00, I sent four text messages. Instead of dropping to £2.80 (I am using Classic Pay as You Go, which charges 5p per text), my balance dropped to £1.80, before recovering (without any top-up from me) to £2.79 by the next morning.

I did not make any calls during the period in question, and mobile data was switched off.

These apparently random fluctuations are persisting, and it makes me reluctant to top-up too much credit, in case the system gobbles it up!

[MI5 · Accepted solution]

There is a known issue with that tariff and how it is displayed in your Myo2.
O2 are investigating it.

[Cleoriff]

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@MI5 wrote:
There is a known issue with that tariff and how it is displayed in your Myo2.
O2 are investigating it.

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Yes...about time they came back with a solution as well...

[Anonymous]

Many thanks for your quick response.

[MI5]

No problem mate.
We'll try and remember to update your post if we hear anything.

[Anonymous]

The same "problem tariff" (Classic PAYG) is still deducting at data tariff rate of about 15p. per MB instead of 5p, for low data users (i.e. typically "background " operational phone data .

This is under investigation  !! Hopefully !!