No Feedback Useless Call Centre

App**** for an Increase on my credit card via App on Saturday 14/09/2019. Pre approved, will contact me within 48 hours. I follow up on Tuesday 17/09, require 3 month bank statements. Emailed docs, no feedback. Followed up Friday 20/09. needed August income to reflect. Resend docs with August statement. Follow up Wednesday 25/09. Haven't received please resend. Send AGAIN, double checking statements are correct. Follow up today, sorry system cannot verify you please go to branch. This is ridiculous. I have been into the branch, not 6 months ago to update all my details, I have phoned you 4 times in the last 3 weeks to follow up no problem, now all of a sudden I cannot be verified? You do not provide feedback to let me know there are documents outstanding, and just wait for your clients to phone you, and if you do not have answers, sorry go to a branch. Contact me and give me feedback on my app**** limit increase, I cannot afford to go to a branch every 2 weeks.