System error excuse

I’m a very dissatisfied customer right now, I don’t know which insurance company is worthy any more. I have a warranty insurance with auto and general, and lately I have noticed that for the last two months they have not been debiting my account, I called in to enquirer about this and the response I received is that it was a “system error” and yet they could not pick it up themselves, what upsets me the most is that now it’s already the middle of the month and I have to pay double the premium for a stupid mistake that I did not do. This is highly unprofessional, if I were to not pick this problem up and my car had a mechanical glitch then there’d be reasons given to not pay my mechanical issues based on “unpaid premiums” that they failed to deduct on the set date that we agreed upon. I’m keeping this on record just Incase this happens again because insurance companies now think they can outsmart us as customers. Also as soon as I find something that sounds better I will leave this insurance because I can not afford to be inconvenienced like this. Sort out this mess.