Call from TSB has stopped me receiving calls and texts

[#1]

Just been setting up a new TSB bank account and they tried to phone my mobile so I can input a verification code.

This never came and since then I can't receive calls or texts. The calls go straight to answerphone. If I leave a test message there it doesn't show a notification either.

I have read about this problem from others on here and it appears to a known about Plusnet problem to do with short codes. The advice I read  was to 

key into your dial pad #21# and press call. Following this, can you re-boot your handset by performing the following:

• Turn the handset off
• Take the SIM card out
• Leave it for a couple of minutes
• Replace the SIM card
• Turn the handset back on again

This will refresh the signal to the SIM card and apply any changes.

This I have done many time to no effect!

Also I tried to see if I could make my answerphone only answer after 30 seconds so I keyed into my dialpad **004*+447870020555*11*30#
I also tried **004*07870020555*11*30#
I also tried **61*+447870020555*11*30#
Finally I also tried **61*07870020555*11*30#  and pressed call. This reported "Call forwarding Service has been disabled"

This also had no effect and I really neeed Plusnet support to sort this out, please.

Moderator's note by Mike (Mav): Post released from Spam Filter

[#2]

Desperate to get my phone working again I called customer support and was told the only answer was for them to send me a new SIM card in the post. This will take 2 working days, then if that cures the problem (and I have my doubts) what will happen when TSB phones me again with a verification call?

It's a shame as I had no bother with Plusnet up untill now, but this is causing me to think about moving to another network that does handle short codes without any of these problems.

[#3]

Come on PlusNet, this needs sorting quickly. It's bad enough not being able to receive short code texts, but if it means having to issue a new SIm to re-establish calls then it's crazy!. Many organisations are using short code texts for verification, most banks , HMRC and the NHS to name but a few. This is a MAJOR problem!. What is being done to fix it ?

[#4 · Accepted solution]

The replacement SIM arrived promptly today. I inserted it in my phone then rang 080007911331. [CSA Removed] was on the ball upgrading my account with the new SIM details. After a couple of hours nothing had happened,. So I looked at my settings and selected Plusnet as my Network Operator.
This worked, and after a reboot I was back to normal.
Soon after I received a text from TSB to remind me that they had a mobile app I could download. However I think after all this trouble I will keep away from the app and giving this Plusnet number to them for validation purposes.

Moderator's note by Mike (Mav): CSA name removed as per Forum rules.

[#5]

I have already had a replacement sim. This has not fixed this issue for me.

[#6]

I'm having the same issue since trying to install the tsb app. Has anyone found a permanent fix for this issue?