Rain fails to correct their mistake

On 17 August 2020, I logged a query via Rain Support as their call center is inactive. My query was with regards to my billing statement whereby the address appearing on the statement had been changed without my permission and the name of the sim cards were changed without my permission which affected the billing statement. The representative for Rain contested that it was not changed however my invoices show that since April 2020, Rain changed my sim card names and since June/July the address had changed. I provided the statements to her as proof. I had to go on the website to change the sim card names back to the original names however I do not have access to change the address. I requested Rain to amend the billing statements as this was their error however their has been no feedback since. Their call center is still inactive and they do not respond to my emails. These sim cards are on my name however they are used for an NPO organisation as I am the Director hence the incorrect invoicing will affect the financial reporting.