Group plan - not able to add new sims
I have been trying to add new sims to a group plan for the last 10 days . I have had no help from customer services chat despite several conversations. Originally I added 3 sims to my account (owner) but every time I get through the payment verification it tries to submit but then comes up as an error to try again or contact customer services. I have activated my sim and the 3 on the group. These are all working fine (plus transfer of old numbers) and are now in use. I have tried everything from clearing the usual browser /cache history etc. Deleted bank details and added them again etc. I have even left trying over the weekend in case there was some kind of glitch/loop but to no avail . I have even phoned my bank twice and obviously there is nothing stopping payments going through. I have also tried to set up another owner account but this doesn't work either. We only have one payment method.
I have been extremely disappointed at the lack of technical knowledge on the web chat even when I have had to explain everything several times I am not getting any answers or reasons.
Has this happened to anyone else? Thank you