Poor service

Good day. I took out 3 different policies from 1ste for woman. From the beginnig im struggeling with them to correct my banking details. Now one of the policies did not go off due to wrong banking details. I DO NOT UNDERSTAND THIS. i have 3 different coverage with one policy number. All personal details stays the same. If it goes like this how will i strugle if i should claim. I communicate on this platform. Because you dont respond to my emails. Already spoke to 3 consultants regarding this matter. On the other 2 policies i had to consent a debit order mandate. Please see to this matter Immediately. Thank you